AIEEE 2006 | Electromagnetic Waves Question 137 | Physics

The $$rms$$ value of the electric field of the light coming from the Sun is $$720$$ $$N/C.$$ The average total energy density of the electromagnetic wave is

$$4.58 \times {10^{ - 6}}\,J/{m^3}$$

$$6.37 \times {10^{ - 9}}\,J/{m^3}$$

$$81.35 \times {10^{ - 12}}\,J/{m^3}$$

$$3.3 \times {10^{ - 3}}\,J/{m^3}$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

An electromagnetic wave of frequency $$v=3.0$$ $$MHz$$ passes from vacuum into a dielectric medium with permittivity $$ \in = 4.0.$$ Then

wave length is halved and frequency remains unchanged

wave length is doubled and the frequency becomes half

wave length is doubled and the frequency remains unchanged

wave length and frequency both remain unchanged.

AIEEE 2004

MCQ (Single Correct Answer)

-1

A radiation of energy $$E$$ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is

$$Ec$$

$$2E/c$$

$$E/c$$

$$E/{c^2}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

Electromagnetic waves are transverse in nature is evident by

polarization

interference

reflection

diffraction

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