Reflection of light at plane surfaces- part I

What are the laws of refraction? Choose all that apply.

• the incident ray, reflected ray, and, refracted ray at the point of incidence all lie in the same plane

• The incident ray, refracted ray, and, the normal at the point of incidence all lie in the same plane

• The ratio of the sine of the angle 'i' to the sine of angle 'r' is a constant for any given pair of media

• the ratio of the cosine of angle 'i' to the cosine of angle 'r' is a constant for any given pair of media

When light gets refracted form a denser to a rarer medium, the speed of light:

• Decreases

• Increases

• remains the same

• comes to a stop

When light gets refracted from a rarer to a denser medium the speed of light:

• Remains the same

• Increases

• Decreases

• Stops

What happens to the frequency of light moving from one medium to another?

• No change

• Decreases

• Increases

• B or C depending on the refractive index of the medium

The wavelength of light on passing from one medium to another:

• Denser to rarer- increases; rarer to denser- decreases

• Denser to rarer- decreases; rarer to denser- increases

• Denser to rarer- no changer; rarer to denser- decreases

• Denser to rarer- increases; rarer to denser- no change

Under what conditions does a light ray pass undeviated during refraction? Choose all that apply.

• When the angle of incidence at the boundary of the two media is equal to zero

• When the refractive indices of the given media are the same

• When the angle of incidence is equal to the critical angle

• When the refractive index of medium one is less than medium two

The speed of light in air and its refractive index is:

• 3*10^8 m/s, 9.02

• 3*10^8 m/s, 8.81

• 3*10^8 m/s, 1.0003

• 3*10^7 m/s, 2.23

The speed of light in vacuum and its refractive index is:

• 3*10^8 m/s, 1

• 3*10^8 m/s, 66

• 3*10^8 m/s, 2.9

• 3*10^4 m/s, 1

The speed of light in water and its refractive index is:

• 2.25*10^8 m/s, 1.6

• 2.25*10^8 m/s, 16

• 2.29*10^8 m/s, 166

• 2.25*10^8 m/s, 1.33

The speed of light in glass and its refractive index is:

• 2*10^8 m/s, 3

• 2*10^8 m/s, 8.9

• 2*10^8 m/s, 1.5

• 2*10^16 m/s, 1.5