266226
The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant \(k\) and compresses it by length \(L\). The maximum velocity of the block after collision is:
1 Zero
2 \(\sqrt{\frac{2 k}{m}} L\)
3 \(\sqrt{\frac{k}{m}} L\)
4 \(\sqrt{M \mathrm{MLL}}\)
Explanation:
c When block of mass \(M\) collides with the spring its kinetic energy gets converted into elastic potential energy of the spring From the law of conservation of energy \[ \frac{1}{2} M v^2=\frac{1}{2} K L^2 \quad \Rightarrow v=\sqrt{\frac{K}{M}} \]
**NCERT-XI-I-81**
TEST SERIES (PHYSICS FST)
266227
Assertion: The temperature at which Centigrade and Fahrenheit thermometers read the same is \(-60^{\circ}\). Reas on: There is no relation between Fahrenheit and Centigrade temperature.
1 Both assertion and reason are true and the reason is the correct explanation of the assertion
2 Both assertion and reason are true but reason is not the correct explanation of the assertion
3 Assertion is true but reason is false
4 Assertion and reason both are false
Explanation:
d The relation between F and Cscale is, \(\frac{\mathrm{C}}{5}=\frac{\mathrm{F}-32}{9}\). If \(\mathrm{F}=\mathrm{C} \Rightarrow \mathrm{C}=-40^{\circ} \mathrm{C}\), i.e., at \(-40^{\circ}\) the Centigrade and Fahrenheit thermometers reads the same.
**NCERT-XI-II-203**
TEST SERIES (PHYSICS FST)
266228
The moment of inertia of \(a\) thin uniform rod rotating about the perpendicular axis passing through one end is \(I\). The same rod is bent into a ring and its moment of inertia about the diameter is \(I^{\prime}\), then the ratio \(\frac{J^{\prime}}{1}\) is
266229
Two particle of masses \(m\) and 9 m are placed at a distance r . The gravitational potential at a point on the line joining them where the gravitational field is zero is:
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TEST SERIES (PHYSICS FST)
266226
The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant \(k\) and compresses it by length \(L\). The maximum velocity of the block after collision is:
1 Zero
2 \(\sqrt{\frac{2 k}{m}} L\)
3 \(\sqrt{\frac{k}{m}} L\)
4 \(\sqrt{M \mathrm{MLL}}\)
Explanation:
c When block of mass \(M\) collides with the spring its kinetic energy gets converted into elastic potential energy of the spring From the law of conservation of energy \[ \frac{1}{2} M v^2=\frac{1}{2} K L^2 \quad \Rightarrow v=\sqrt{\frac{K}{M}} \]
**NCERT-XI-I-81**
TEST SERIES (PHYSICS FST)
266227
Assertion: The temperature at which Centigrade and Fahrenheit thermometers read the same is \(-60^{\circ}\). Reas on: There is no relation between Fahrenheit and Centigrade temperature.
1 Both assertion and reason are true and the reason is the correct explanation of the assertion
2 Both assertion and reason are true but reason is not the correct explanation of the assertion
3 Assertion is true but reason is false
4 Assertion and reason both are false
Explanation:
d The relation between F and Cscale is, \(\frac{\mathrm{C}}{5}=\frac{\mathrm{F}-32}{9}\). If \(\mathrm{F}=\mathrm{C} \Rightarrow \mathrm{C}=-40^{\circ} \mathrm{C}\), i.e., at \(-40^{\circ}\) the Centigrade and Fahrenheit thermometers reads the same.
**NCERT-XI-II-203**
TEST SERIES (PHYSICS FST)
266228
The moment of inertia of \(a\) thin uniform rod rotating about the perpendicular axis passing through one end is \(I\). The same rod is bent into a ring and its moment of inertia about the diameter is \(I^{\prime}\), then the ratio \(\frac{J^{\prime}}{1}\) is
266229
Two particle of masses \(m\) and 9 m are placed at a distance r . The gravitational potential at a point on the line joining them where the gravitational field is zero is:
266226
The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant \(k\) and compresses it by length \(L\). The maximum velocity of the block after collision is:
1 Zero
2 \(\sqrt{\frac{2 k}{m}} L\)
3 \(\sqrt{\frac{k}{m}} L\)
4 \(\sqrt{M \mathrm{MLL}}\)
Explanation:
c When block of mass \(M\) collides with the spring its kinetic energy gets converted into elastic potential energy of the spring From the law of conservation of energy \[ \frac{1}{2} M v^2=\frac{1}{2} K L^2 \quad \Rightarrow v=\sqrt{\frac{K}{M}} \]
**NCERT-XI-I-81**
TEST SERIES (PHYSICS FST)
266227
Assertion: The temperature at which Centigrade and Fahrenheit thermometers read the same is \(-60^{\circ}\). Reas on: There is no relation between Fahrenheit and Centigrade temperature.
1 Both assertion and reason are true and the reason is the correct explanation of the assertion
2 Both assertion and reason are true but reason is not the correct explanation of the assertion
3 Assertion is true but reason is false
4 Assertion and reason both are false
Explanation:
d The relation between F and Cscale is, \(\frac{\mathrm{C}}{5}=\frac{\mathrm{F}-32}{9}\). If \(\mathrm{F}=\mathrm{C} \Rightarrow \mathrm{C}=-40^{\circ} \mathrm{C}\), i.e., at \(-40^{\circ}\) the Centigrade and Fahrenheit thermometers reads the same.
**NCERT-XI-II-203**
TEST SERIES (PHYSICS FST)
266228
The moment of inertia of \(a\) thin uniform rod rotating about the perpendicular axis passing through one end is \(I\). The same rod is bent into a ring and its moment of inertia about the diameter is \(I^{\prime}\), then the ratio \(\frac{J^{\prime}}{1}\) is
266229
Two particle of masses \(m\) and 9 m are placed at a distance r . The gravitational potential at a point on the line joining them where the gravitational field is zero is:
266226
The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant \(k\) and compresses it by length \(L\). The maximum velocity of the block after collision is:
1 Zero
2 \(\sqrt{\frac{2 k}{m}} L\)
3 \(\sqrt{\frac{k}{m}} L\)
4 \(\sqrt{M \mathrm{MLL}}\)
Explanation:
c When block of mass \(M\) collides with the spring its kinetic energy gets converted into elastic potential energy of the spring From the law of conservation of energy \[ \frac{1}{2} M v^2=\frac{1}{2} K L^2 \quad \Rightarrow v=\sqrt{\frac{K}{M}} \]
**NCERT-XI-I-81**
TEST SERIES (PHYSICS FST)
266227
Assertion: The temperature at which Centigrade and Fahrenheit thermometers read the same is \(-60^{\circ}\). Reas on: There is no relation between Fahrenheit and Centigrade temperature.
1 Both assertion and reason are true and the reason is the correct explanation of the assertion
2 Both assertion and reason are true but reason is not the correct explanation of the assertion
3 Assertion is true but reason is false
4 Assertion and reason both are false
Explanation:
d The relation between F and Cscale is, \(\frac{\mathrm{C}}{5}=\frac{\mathrm{F}-32}{9}\). If \(\mathrm{F}=\mathrm{C} \Rightarrow \mathrm{C}=-40^{\circ} \mathrm{C}\), i.e., at \(-40^{\circ}\) the Centigrade and Fahrenheit thermometers reads the same.
**NCERT-XI-II-203**
TEST SERIES (PHYSICS FST)
266228
The moment of inertia of \(a\) thin uniform rod rotating about the perpendicular axis passing through one end is \(I\). The same rod is bent into a ring and its moment of inertia about the diameter is \(I^{\prime}\), then the ratio \(\frac{J^{\prime}}{1}\) is
266229
Two particle of masses \(m\) and 9 m are placed at a distance r . The gravitational potential at a point on the line joining them where the gravitational field is zero is:
