Electromagnetic Waves
PHXI15:WAVES

358908 In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative \(z\)-axis and magnetic field is along the positive \(x\)-axis. Then the direction of propagation of electromagnetic wave is

1 positive \(z\)-axis
2 positive \(y\)-axis
3 negative \(y\)-axis
4 at \(45^{\circ}\) angle from positive -axis.
PHXI15:WAVES

358909 The magnetic field in a plane electromagnetic wave is given by
\({B_y} = 2 \times {10^{ - 7}}\sin \left( {0.5 \times {{10}^3}x - 1.5 \times {{10}^{11}}t} \right)T.\)
The wavelength and frequency of the wave respectively are

1 \(1.9\;cm,29GHz\)
2 \(3.2\;cm,39GH\)
3 \(1.26\;cm,23.9GHz\)
4 \(2.13\;cm,28.72GHz\)
PHXI15:WAVES

358910 An em wave is propagating in a medium with a velocity \(\vec{v}=v \hat{i}\) The instantaneous oscillating electric field of this em wave is along \(+y\) axis. Then the direction of oscillating magnetic field of the em wave will be along

1 \(-y\) direction
2 \(-x\) direction
3 \(+z\) direction
4 \(-z\) direction
PHXI15:WAVES

358911 Assertion :
The eye is most sensitive for the light of frequency \(5.36 \times {10^{14}}\;Hz.\)
Reason :
The frequency of light is directly proportional to wavelength of light.

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.
PHXI15:WAVES

358908 In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative \(z\)-axis and magnetic field is along the positive \(x\)-axis. Then the direction of propagation of electromagnetic wave is

1 positive \(z\)-axis
2 positive \(y\)-axis
3 negative \(y\)-axis
4 at \(45^{\circ}\) angle from positive -axis.
PHXI15:WAVES

358909 The magnetic field in a plane electromagnetic wave is given by
\({B_y} = 2 \times {10^{ - 7}}\sin \left( {0.5 \times {{10}^3}x - 1.5 \times {{10}^{11}}t} \right)T.\)
The wavelength and frequency of the wave respectively are

1 \(1.9\;cm,29GHz\)
2 \(3.2\;cm,39GH\)
3 \(1.26\;cm,23.9GHz\)
4 \(2.13\;cm,28.72GHz\)
PHXI15:WAVES

358910 An em wave is propagating in a medium with a velocity \(\vec{v}=v \hat{i}\) The instantaneous oscillating electric field of this em wave is along \(+y\) axis. Then the direction of oscillating magnetic field of the em wave will be along

1 \(-y\) direction
2 \(-x\) direction
3 \(+z\) direction
4 \(-z\) direction
PHXI15:WAVES

358911 Assertion :
The eye is most sensitive for the light of frequency \(5.36 \times {10^{14}}\;Hz.\)
Reason :
The frequency of light is directly proportional to wavelength of light.

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.
PHXI15:WAVES

358908 In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative \(z\)-axis and magnetic field is along the positive \(x\)-axis. Then the direction of propagation of electromagnetic wave is

1 positive \(z\)-axis
2 positive \(y\)-axis
3 negative \(y\)-axis
4 at \(45^{\circ}\) angle from positive -axis.
PHXI15:WAVES

358909 The magnetic field in a plane electromagnetic wave is given by
\({B_y} = 2 \times {10^{ - 7}}\sin \left( {0.5 \times {{10}^3}x - 1.5 \times {{10}^{11}}t} \right)T.\)
The wavelength and frequency of the wave respectively are

1 \(1.9\;cm,29GHz\)
2 \(3.2\;cm,39GH\)
3 \(1.26\;cm,23.9GHz\)
4 \(2.13\;cm,28.72GHz\)
PHXI15:WAVES

358910 An em wave is propagating in a medium with a velocity \(\vec{v}=v \hat{i}\) The instantaneous oscillating electric field of this em wave is along \(+y\) axis. Then the direction of oscillating magnetic field of the em wave will be along

1 \(-y\) direction
2 \(-x\) direction
3 \(+z\) direction
4 \(-z\) direction
PHXI15:WAVES

358911 Assertion :
The eye is most sensitive for the light of frequency \(5.36 \times {10^{14}}\;Hz.\)
Reason :
The frequency of light is directly proportional to wavelength of light.

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.
PHXI15:WAVES

358908 In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative \(z\)-axis and magnetic field is along the positive \(x\)-axis. Then the direction of propagation of electromagnetic wave is

1 positive \(z\)-axis
2 positive \(y\)-axis
3 negative \(y\)-axis
4 at \(45^{\circ}\) angle from positive -axis.
PHXI15:WAVES

358909 The magnetic field in a plane electromagnetic wave is given by
\({B_y} = 2 \times {10^{ - 7}}\sin \left( {0.5 \times {{10}^3}x - 1.5 \times {{10}^{11}}t} \right)T.\)
The wavelength and frequency of the wave respectively are

1 \(1.9\;cm,29GHz\)
2 \(3.2\;cm,39GH\)
3 \(1.26\;cm,23.9GHz\)
4 \(2.13\;cm,28.72GHz\)
PHXI15:WAVES

358910 An em wave is propagating in a medium with a velocity \(\vec{v}=v \hat{i}\) The instantaneous oscillating electric field of this em wave is along \(+y\) axis. Then the direction of oscillating magnetic field of the em wave will be along

1 \(-y\) direction
2 \(-x\) direction
3 \(+z\) direction
4 \(-z\) direction
PHXI15:WAVES

358911 Assertion :
The eye is most sensitive for the light of frequency \(5.36 \times {10^{14}}\;Hz.\)
Reason :
The frequency of light is directly proportional to wavelength of light.

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.