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The intensity of light from a source is 500π W m-2. The amplitude of electric field in this wave is

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Important Questions on Electromagnetic Waves

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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Energy Density and Intensity>Q 32
A point source of 2 W is radiating uniformly in all directions in a vacuum. The amplitude of electric field at a distance 2 m from it is
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Energy Density and Intensity>Q 33
An electromagnetic wave propagating along the z axis has a frequency of 5×104 Hz. If the amplitude of the electric field is 10 V m-1, then the average energy density of the magnetic field is
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Energy Density and Intensity>Q 34
A plane electromagnetic wave is incident on a material surface. If the wave delivers momentum p and energy E, then
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Electromagnetic Spectrum>Q 35
Electromagnetic radiation has an energy of 14.4 keV. Which region of the electromagnetic spectrum does it belong?
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Electromagnetic Spectrum>Q 36
Which of the following are not electromagnetic waves?
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Electromagnetic Spectrum>Q 37
In which part of the earth's atmosphere is the ozone layer present?
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Electromagnetic Spectrum>Q 38
The ozone layer in Earth's atmosphere is crucial for human survival because it
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Chapterwise/Topicwise Daily Practice Problems (DPP) Magnetism and Electromagnetic Induction NEET>Chapter 5 - Electromagnetic Waves>Electromagnetic Spectrum>Q 39
The frequency from 3×109 Hz to 3×1010 Hz lies in the