BITSAT 2022 | Electromagnetic Waves Question 2 | Physics

An electromagnetic wave is propagating along X-axis. At x = 1 cm and t = 18s, its electric vector |E| = 8 V/m, then the magnitude of its magnetic vector is

2.66 $$\times$$ 10^$$-$$8

3 $$\times$$ 10^$$-$$7

3.14 $$\times$$ 10^$$-$$8

3.16 $$\times$$ 10^$$-$$7

BITSAT 2021

MCQ (Single Correct Answer)

-1

Choose the correct statement.

The speed of light in the meta-material is $$v = c|n|$$.

The speed of light in the meta-material is $$v = {c \over {|n|}}$$.

The speed of light in the meta-material is v = c.

The wavelength of the light in the meta-material ($$\lambda$$_m) is given by $$\lambda$$_m = $$\lambda$$_air | n |.

BITSAT 2020

MCQ (Single Correct Answer)

-1

The magnetic field of a beam emerging from a fitter facing a flood light is given by

B = 10 $$\times$$ 10^$$-$$8 sin(1 $$\times$$ 10⁷z $$-$$ 3.6 $$\times$$ 10¹⁵t)T. The average intensity of the beam is

1.82 W/m²

1.19 W/m²

1.18 W/m²

1.17 W/m²

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