Solving questions on Light refraction - Term 1 - Grade 11

when a light ray is incident from air with an acute angle on a glass surface, its direction gets change due to the change of ...….......... between the two media.

• the amplitude of the light wave

• the color of the light

• the frequency of light

• the speed of light

when a light wave passes from an optically rarer medium to another optically denser medium with an angle of incidence = zero, which of the following light properties doesn't change?

• the wave speed

• the wavelength

• the direction of propagation

• the wave amplitude

when a light ray falls on the interface between two media at an angle of incidence Φ and gets refracted at an angle of refraction ϴ, the ratio between sin Φ and sin ϴ is .............

• constant for the two media

• variable according to the value of Φ

• constant and always greater than 1

• constant and always less than 1

the opposite figure shows a light ray that is incident on a glass slab, so the two numbers denoting the angle of incidence and angle of refraction are....................

• 1,3

• 1,4

• 2,3

• 2,4

When the angle of incidence on the boundary surface between two media gets doubled, the relative refractive index between them...................

• decreases to its half

• gets doubled

• remains constant

• gets tripled

From the opposite figure, the values of the angle of reflection and the angle of refraction are ................ , .................

• 38, 86.38

• 52.88, 38

• 28.38, 38

• 38, 52.88

The opposite figure shows a light ray falling from medium 1 on the boundary surface with medium 2, so the relative refractive index from medium 1 to medium 2 equals......................

• 1.52

• 1.48

• 1.34

• 1.22

if a light ray is incident on a surface of a cuboid that has an absolute refractive index of √3 (square root of 3) at an angle of incidence 60, the angle of refraction of the light rays equal..................

• 30

• 45

• 60

• 90