Electromagnetic Waves
« Previous Topic: Electromagnetic Spectrum Last Topic in »
PHXI15:WAVES

358826 Assertion :
The electric energy and magnetic energy have equal average values in linearly polarised plane em waves.
Reason :
The electric field and magnetic field have equal average values in linearly polarised plane em waves.

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

358827 Consider the following two statements regarding a linearly polarised plane electromagnetic wave.
(i) Electric field and the magnetic field have equal average values.
(ii) Electric energy and the magnetic energy have equal average values.

1 (ii) is true
2 Both are false
3 Both are true
4 (i) is true
PHXI15:WAVES

358828 The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :\((e = \) speed of electromagnetic waves)

1 \(1: 1\)
2 \(1:c\)
3 \(1: c^{2}\)
4 \(c:1\)
NEET - 2020
PHXI15:WAVES

358829 A laser light of wavelength \(660\,\;nm\) is used to weld Retina detachment. If a laser pulse of width \(60\;ms\) and power \(0.5\;kW\) is used the approximate number of photons in the pulse are -
[Take planck's constant \(h=6.62 \times 10^{-34} J_{S}\) ]

1 \(10^{22}\)
2 \(10^{19}\)
3 \(10^{20}\)
4 \(10^{18}\)
JEE - 2017
PHXI15:WAVES

358830 The intensity of solar radiation at the earth's surface is \(1KW{m^{ - 2}}\). The power entering the pupil of an eye of diameter \(0.5\;cm\) is

1 \(9.8\;mW\)
2 \(19.6\;mW\)
3 \(4.9\;mW\)
4 \(39.2\;mW\)
Join With Us for More Updates
PHXI15:WAVES

358826 Assertion :
The electric energy and magnetic energy have equal average values in linearly polarised plane em waves.
Reason :
The electric field and magnetic field have equal average values in linearly polarised plane em waves.

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

358827 Consider the following two statements regarding a linearly polarised plane electromagnetic wave.
(i) Electric field and the magnetic field have equal average values.
(ii) Electric energy and the magnetic energy have equal average values.

1 (ii) is true
2 Both are false
3 Both are true
4 (i) is true
PHXI15:WAVES

358828 The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :\((e = \) speed of electromagnetic waves)

1 \(1: 1\)
2 \(1:c\)
3 \(1: c^{2}\)
4 \(c:1\)
NEET - 2020
PHXI15:WAVES

358829 A laser light of wavelength \(660\,\;nm\) is used to weld Retina detachment. If a laser pulse of width \(60\;ms\) and power \(0.5\;kW\) is used the approximate number of photons in the pulse are -
[Take planck's constant \(h=6.62 \times 10^{-34} J_{S}\) ]

1 \(10^{22}\)
2 \(10^{19}\)
3 \(10^{20}\)
4 \(10^{18}\)
JEE - 2017
PHXI15:WAVES

358830 The intensity of solar radiation at the earth's surface is \(1KW{m^{ - 2}}\). The power entering the pupil of an eye of diameter \(0.5\;cm\) is

1 \(9.8\;mW\)
2 \(19.6\;mW\)
3 \(4.9\;mW\)
4 \(39.2\;mW\)
For More Updates join with Us
PHXI15:WAVES

358826 Assertion :
The electric energy and magnetic energy have equal average values in linearly polarised plane em waves.
Reason :
The electric field and magnetic field have equal average values in linearly polarised plane em waves.

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

358827 Consider the following two statements regarding a linearly polarised plane electromagnetic wave.
(i) Electric field and the magnetic field have equal average values.
(ii) Electric energy and the magnetic energy have equal average values.

1 (ii) is true
2 Both are false
3 Both are true
4 (i) is true
PHXI15:WAVES

358828 The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :\((e = \) speed of electromagnetic waves)

1 \(1: 1\)
2 \(1:c\)
3 \(1: c^{2}\)
4 \(c:1\)
NEET - 2020
PHXI15:WAVES

358829 A laser light of wavelength \(660\,\;nm\) is used to weld Retina detachment. If a laser pulse of width \(60\;ms\) and power \(0.5\;kW\) is used the approximate number of photons in the pulse are -
[Take planck's constant \(h=6.62 \times 10^{-34} J_{S}\) ]

1 \(10^{22}\)
2 \(10^{19}\)
3 \(10^{20}\)
4 \(10^{18}\)
JEE - 2017
PHXI15:WAVES

358830 The intensity of solar radiation at the earth's surface is \(1KW{m^{ - 2}}\). The power entering the pupil of an eye of diameter \(0.5\;cm\) is

1 \(9.8\;mW\)
2 \(19.6\;mW\)
3 \(4.9\;mW\)
4 \(39.2\;mW\)
NEET DIGITAL LIBRARY
PHXI15:WAVES

358826 Assertion :
The electric energy and magnetic energy have equal average values in linearly polarised plane em waves.
Reason :
The electric field and magnetic field have equal average values in linearly polarised plane em waves.

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

358827 Consider the following two statements regarding a linearly polarised plane electromagnetic wave.
(i) Electric field and the magnetic field have equal average values.
(ii) Electric energy and the magnetic energy have equal average values.

1 (ii) is true
2 Both are false
3 Both are true
4 (i) is true
PHXI15:WAVES

358828 The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :\((e = \) speed of electromagnetic waves)

1 \(1: 1\)
2 \(1:c\)
3 \(1: c^{2}\)
4 \(c:1\)
NEET - 2020
PHXI15:WAVES

358829 A laser light of wavelength \(660\,\;nm\) is used to weld Retina detachment. If a laser pulse of width \(60\;ms\) and power \(0.5\;kW\) is used the approximate number of photons in the pulse are -
[Take planck's constant \(h=6.62 \times 10^{-34} J_{S}\) ]

1 \(10^{22}\)
2 \(10^{19}\)
3 \(10^{20}\)
4 \(10^{18}\)
JEE - 2017
PHXI15:WAVES

358830 The intensity of solar radiation at the earth's surface is \(1KW{m^{ - 2}}\). The power entering the pupil of an eye of diameter \(0.5\;cm\) is

1 \(9.8\;mW\)
2 \(19.6\;mW\)
3 \(4.9\;mW\)
4 \(39.2\;mW\)
Join With Us for More Updates
PHXI15:WAVES

358826 Assertion :
The electric energy and magnetic energy have equal average values in linearly polarised plane em waves.
Reason :
The electric field and magnetic field have equal average values in linearly polarised plane em waves.

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

358827 Consider the following two statements regarding a linearly polarised plane electromagnetic wave.
(i) Electric field and the magnetic field have equal average values.
(ii) Electric energy and the magnetic energy have equal average values.

1 (ii) is true
2 Both are false
3 Both are true
4 (i) is true
PHXI15:WAVES

358828 The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is :\((e = \) speed of electromagnetic waves)

1 \(1: 1\)
2 \(1:c\)
3 \(1: c^{2}\)
4 \(c:1\)
NEET - 2020
PHXI15:WAVES

358829 A laser light of wavelength \(660\,\;nm\) is used to weld Retina detachment. If a laser pulse of width \(60\;ms\) and power \(0.5\;kW\) is used the approximate number of photons in the pulse are -
[Take planck's constant \(h=6.62 \times 10^{-34} J_{S}\) ]

1 \(10^{22}\)
2 \(10^{19}\)
3 \(10^{20}\)
4 \(10^{18}\)
JEE - 2017
PHXI15:WAVES

358830 The intensity of solar radiation at the earth's surface is \(1KW{m^{ - 2}}\). The power entering the pupil of an eye of diameter \(0.5\;cm\) is

1 \(9.8\;mW\)
2 \(19.6\;mW\)
3 \(4.9\;mW\)
4 \(39.2\;mW\)