NEET 2022 Phase 1 | Electromagnetic Waves Question 9 | Physics

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

When light propagates through a material medium of relative permittivity $$\varepsilon $$_r and relative permeability $$\mu$$_r, the velocity of light, v is given by (c-velocity of light in vacuum)

v = c

$$v = \sqrt {{{{\mu _r}} \over {{\varepsilon _r}}}} $$

$$v = \sqrt {{{{\varepsilon _r}} \over {{\mu _r}}}} $$

$$v = {c \over {\sqrt {{\varepsilon _r}{\mu _r}} }}$$

NEET 2021

MCQ (Single Correct Answer)

-1

For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field (E) and magnetic field (B) respectively?

$$ - \widehat j + \widehat k, - \widehat j + \widehat k$$

$$ \widehat j + \widehat k, \widehat j + \widehat k$$

$$ - \widehat j + \widehat k, - \widehat j - \widehat k$$

$$\widehat j + \widehat k, - \widehat j - \widehat k$$

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

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

1 : 1

1 : c

1 : c²

c : 1

NEET 2019

MCQ (Single Correct Answer)

-1

Which colour of the light has the longest wavelength?

blue

violet

red

green

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