Refraction of light I FiniteQuest

Refraction of light I

Refraction of light through a glass block and a triangular prism qualitative treatment of simple applications such as real and apparent depth of objects in water and apparent bending of sticks in water. Applications of refractions of light.

1 / 10

The wavelength of light in air is . If it enters a medium with refractive index , what is the wavelength of light in the medium?

400nm

600nm

900 nm

1200nm

2 / 10

When light passes from air into water, how do its speed, wavelength, and frequency change?

Speed decreases, wavelength decreases, frequency decreases.

Speed decreases, wavelength decreases, frequency remains constant.

Speed increases, wavelength increases, frequency remains constant.

Speed remains the same, wavelength decreases, frequency decreases.

3 / 10

If the speed of light in water is $2.25×10^8 m/s$ and the speed of light in air is $3×10^8 m/s$ , what is the refractive index of water relative to air?

0.75

1.25

1.33

2.25

4 / 10

Which of the following conditions is required for light to pass undeviated through the boundary between two media?

The angle of incidence must be 0°.

The angle of incidence must be 45°.

The angle of refraction must be 90°.

The refractive index of both media must be the same.

5 / 10

When light passes from air (n = 1) into glass (n = 1.5), which of the following happens at the boundary between air and glass?

Light is fully reflected.

Light is partially reflected and partially refracted.

Light is completely absorbed.

Light passes undeviated.

6 / 10

The phenomenon of real and apparent depth is used in:

Optical fibers

Lenses of eyeglasses

Underwater photography

Mirage formation

7 / 10

If the refractive index of water is 1.33, and the real depth of an object in water is 3 meters, what is its apparent depth?

2.25 meters

3.99 meters

1.33 meters

3 meters

8 / 10

When a ray of light passes through a glass prism, it experiences deviation. The amount of deviation depends on:

The angle of incidence

The wavelength of light

The refractive index of the prism material

All of the above

9 / 10

In a triangular glass prism, light undergoes two refractions. What happens to the emergent ray in comparison to the incident ray?

The emergent ray is parallel to the incident ray

The emergent ray is perpendicular to the incident ray

The emergent ray is bent away from the base of the prism

The emergent ray is deviated from its original path

10 / 10

When light passes from air into a glass block, it bends:

Away from the normal

Toward the normal

Parallel to the normal

It does not bend

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