1-Which of these wavelengths is closest to a green coloured light? Select one: a

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1-Which of these wavelengths is closest to a green coloured light?

Select one:

a. 450 nm

b. 490 nm

c. 530 nm.

d. 600 nm.

 

2-Unpolarized light is incident on two lenses polarized perpendicular to each other. What happens to the light?

Select one:

a. Light polarized in one plane is transmitted.

b. Randomly polarized light is transmitted but with reduced intensity.

c. Light polarized in two planes is transmitted.

d. No light is transmitted.

 

3-The speed of an electromagnetic wave in vacuum depends on ...

Select one:

a. The temperature

b. The permittivity of free space and the permeability of free space.

c. The amplitude of the electric and magnetic field

d. The angle between the electric and magnetic fields

 

4-Partially linearly polarized light is incident upon a sheet polarizer that is rotated and the transmitted intensity is noted at each angle. What happens to the intensity of the transmitted light?

Select one:

a. The intensity varies with angle but is not zero for any orientation

b. The intensity is zero

c. The intensity stays constant

d. The intensity varies with angle and reaches zero for specific angles

 

5-Ultraviolet rays are intermediate in frequency between ...

Select one:

a. Visible region and microwaves

b. Visible region and x rays

c. Radio waves and infrared