Refraction of light class10

The velocity of light in vacuum is _______ m/s.

• 3x10⁸
• 3x10¹²
• 3x10⁶
• 3x10¹⁰

Tags

NGSS.HS-PS4-1

Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45

• diamond
• water
• flint glass
• barium glass

Tags

NGSS.HS-PS4-1

The formula to calculate the refractive index is

• n=cv
• n=v/c
• n=c/v
• v=nc

Why does the straw appear to be bent?

• The water is warmer than air

• Light travels faster in water than air

• Light is reflected at the air - water interface

• Light is refracted as it crosses air - water interface

When light passes from air to water, what happens to the speed of the light?

• speeds up

• slows down

• stays the same

Tags

NGSS.MS-PS4-2

What is the best explanation for Mickey seeing himself in the mirror?

• refraction

• absorbed

• reflection

• flipped

Tags

CCSS.RI.7.7

CCSS.RL.7.7

CCSS.RL.6.7

CCSS.RI.8.7

CCSS.RI.6.7

Which of the following factors change when light refracts?

• Frequency only

• Wavelength only

• Speed and frequency

• Wavelength and speed

If the index of refraction of a certain material is n = 2, the speed of light in this material is ________.

• 6.7 × 10⁷

• 1.5 × 10⁸

• 3.0× 10⁸

• 6.0 × 10⁸

Refraction is

• the bending of light as it passes into new medium and changes speed

• the bending of light around or through a barrier and changes speed

• when light bounces off a boundary and changes speed

• the bending of light as it crosses a boundary into a new medium with the same speed

When light passes from a rarer medium to a denser medium it bends

• Towards normal

• Away from normal

• Goes undeviated

• Depends upon the medium