362104
Assertion : A vector has both magnitude and direction. Reason : A physical quantity cannot be called as a vector if its magnitude is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
A vector quantity is termed a null vector when it possesses zero magnitude. Despite having zero magnitude, this type of quantity may still exhibit a specific direction. Such is called null-vector mathematically. In PHYSICS 2025, a vector quantities like velocity can be momentarily have zero magnitude such as at maximum height in vertical projection. So correct option is (3).
PHXI04:MOTION IN A PLANE
362105
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
1 Impulse, pressure and area
2 Impulse and area
3 Area and gravitational potential
4 Impulse and pressure
Explanation:
Conceptual Question
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362106
Which one of the following statements is true?
1 A scalar quantity is the one that is conserved in a process
2 A scalar quantity is the one that can never take negative values.
3 A scalar quantity is the one that does not vary from one point to another in space.
4 A scalar quantity has the same value for observers with different orientations of the axes.
Explanation:
A scalar quantity has the same value for observers with different orientations of the axes.
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362107
Assertion : Displacement of a body is the signed sum of the area under velocity time graph. Reason : Displacement is a vector quantity.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
According to the definition, displacement equals velocity multiplied by time. As displacement is a vector quantity, its value corresponds to the signed sum of the area under the velocity-time graph. In this context, areas above the \(\mathrm{x}\)-axis are considered positive, while areas below the \(\mathrm{x}\)-axis are considered negative. So correct option is (2).
PHXI04:MOTION IN A PLANE
362108
Assertion : Velocity is a vector quantity. Reason : A bus moving due north takes a turn and starts moving towards east with same speed. There will be no change in the velocity of bus.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Velocity, being a vector quantity, undergoes changes with alterations in direction. When a bus makes a turn from north to east, its velocity changes accordingly. So correct option is (3).
362104
Assertion : A vector has both magnitude and direction. Reason : A physical quantity cannot be called as a vector if its magnitude is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
A vector quantity is termed a null vector when it possesses zero magnitude. Despite having zero magnitude, this type of quantity may still exhibit a specific direction. Such is called null-vector mathematically. In PHYSICS 2025, a vector quantities like velocity can be momentarily have zero magnitude such as at maximum height in vertical projection. So correct option is (3).
PHXI04:MOTION IN A PLANE
362105
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
1 Impulse, pressure and area
2 Impulse and area
3 Area and gravitational potential
4 Impulse and pressure
Explanation:
Conceptual Question
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362106
Which one of the following statements is true?
1 A scalar quantity is the one that is conserved in a process
2 A scalar quantity is the one that can never take negative values.
3 A scalar quantity is the one that does not vary from one point to another in space.
4 A scalar quantity has the same value for observers with different orientations of the axes.
Explanation:
A scalar quantity has the same value for observers with different orientations of the axes.
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362107
Assertion : Displacement of a body is the signed sum of the area under velocity time graph. Reason : Displacement is a vector quantity.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
According to the definition, displacement equals velocity multiplied by time. As displacement is a vector quantity, its value corresponds to the signed sum of the area under the velocity-time graph. In this context, areas above the \(\mathrm{x}\)-axis are considered positive, while areas below the \(\mathrm{x}\)-axis are considered negative. So correct option is (2).
PHXI04:MOTION IN A PLANE
362108
Assertion : Velocity is a vector quantity. Reason : A bus moving due north takes a turn and starts moving towards east with same speed. There will be no change in the velocity of bus.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Velocity, being a vector quantity, undergoes changes with alterations in direction. When a bus makes a turn from north to east, its velocity changes accordingly. So correct option is (3).
362104
Assertion : A vector has both magnitude and direction. Reason : A physical quantity cannot be called as a vector if its magnitude is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
A vector quantity is termed a null vector when it possesses zero magnitude. Despite having zero magnitude, this type of quantity may still exhibit a specific direction. Such is called null-vector mathematically. In PHYSICS 2025, a vector quantities like velocity can be momentarily have zero magnitude such as at maximum height in vertical projection. So correct option is (3).
PHXI04:MOTION IN A PLANE
362105
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
1 Impulse, pressure and area
2 Impulse and area
3 Area and gravitational potential
4 Impulse and pressure
Explanation:
Conceptual Question
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362106
Which one of the following statements is true?
1 A scalar quantity is the one that is conserved in a process
2 A scalar quantity is the one that can never take negative values.
3 A scalar quantity is the one that does not vary from one point to another in space.
4 A scalar quantity has the same value for observers with different orientations of the axes.
Explanation:
A scalar quantity has the same value for observers with different orientations of the axes.
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362107
Assertion : Displacement of a body is the signed sum of the area under velocity time graph. Reason : Displacement is a vector quantity.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
According to the definition, displacement equals velocity multiplied by time. As displacement is a vector quantity, its value corresponds to the signed sum of the area under the velocity-time graph. In this context, areas above the \(\mathrm{x}\)-axis are considered positive, while areas below the \(\mathrm{x}\)-axis are considered negative. So correct option is (2).
PHXI04:MOTION IN A PLANE
362108
Assertion : Velocity is a vector quantity. Reason : A bus moving due north takes a turn and starts moving towards east with same speed. There will be no change in the velocity of bus.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Velocity, being a vector quantity, undergoes changes with alterations in direction. When a bus makes a turn from north to east, its velocity changes accordingly. So correct option is (3).
362104
Assertion : A vector has both magnitude and direction. Reason : A physical quantity cannot be called as a vector if its magnitude is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
A vector quantity is termed a null vector when it possesses zero magnitude. Despite having zero magnitude, this type of quantity may still exhibit a specific direction. Such is called null-vector mathematically. In PHYSICS 2025, a vector quantities like velocity can be momentarily have zero magnitude such as at maximum height in vertical projection. So correct option is (3).
PHXI04:MOTION IN A PLANE
362105
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
1 Impulse, pressure and area
2 Impulse and area
3 Area and gravitational potential
4 Impulse and pressure
Explanation:
Conceptual Question
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362106
Which one of the following statements is true?
1 A scalar quantity is the one that is conserved in a process
2 A scalar quantity is the one that can never take negative values.
3 A scalar quantity is the one that does not vary from one point to another in space.
4 A scalar quantity has the same value for observers with different orientations of the axes.
Explanation:
A scalar quantity has the same value for observers with different orientations of the axes.
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362107
Assertion : Displacement of a body is the signed sum of the area under velocity time graph. Reason : Displacement is a vector quantity.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
According to the definition, displacement equals velocity multiplied by time. As displacement is a vector quantity, its value corresponds to the signed sum of the area under the velocity-time graph. In this context, areas above the \(\mathrm{x}\)-axis are considered positive, while areas below the \(\mathrm{x}\)-axis are considered negative. So correct option is (2).
PHXI04:MOTION IN A PLANE
362108
Assertion : Velocity is a vector quantity. Reason : A bus moving due north takes a turn and starts moving towards east with same speed. There will be no change in the velocity of bus.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Velocity, being a vector quantity, undergoes changes with alterations in direction. When a bus makes a turn from north to east, its velocity changes accordingly. So correct option is (3).
362104
Assertion : A vector has both magnitude and direction. Reason : A physical quantity cannot be called as a vector if its magnitude is zero.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
A vector quantity is termed a null vector when it possesses zero magnitude. Despite having zero magnitude, this type of quantity may still exhibit a specific direction. Such is called null-vector mathematically. In PHYSICS 2025, a vector quantities like velocity can be momentarily have zero magnitude such as at maximum height in vertical projection. So correct option is (3).
PHXI04:MOTION IN A PLANE
362105
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
1 Impulse, pressure and area
2 Impulse and area
3 Area and gravitational potential
4 Impulse and pressure
Explanation:
Conceptual Question
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362106
Which one of the following statements is true?
1 A scalar quantity is the one that is conserved in a process
2 A scalar quantity is the one that can never take negative values.
3 A scalar quantity is the one that does not vary from one point to another in space.
4 A scalar quantity has the same value for observers with different orientations of the axes.
Explanation:
A scalar quantity has the same value for observers with different orientations of the axes.
NCERT Exemplar
PHXI04:MOTION IN A PLANE
362107
Assertion : Displacement of a body is the signed sum of the area under velocity time graph. Reason : Displacement is a vector quantity.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
According to the definition, displacement equals velocity multiplied by time. As displacement is a vector quantity, its value corresponds to the signed sum of the area under the velocity-time graph. In this context, areas above the \(\mathrm{x}\)-axis are considered positive, while areas below the \(\mathrm{x}\)-axis are considered negative. So correct option is (2).
PHXI04:MOTION IN A PLANE
362108
Assertion : Velocity is a vector quantity. Reason : A bus moving due north takes a turn and starts moving towards east with same speed. There will be no change in the velocity of bus.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Velocity, being a vector quantity, undergoes changes with alterations in direction. When a bus makes a turn from north to east, its velocity changes accordingly. So correct option is (3).
