Index of Refraction

• Reflection
• Refraction

Tags

NGSS.MS-PS4-2

Which type of medium is needed for refraction of light?

• Transparent

• Translucent

• Opaque

• None of these

Tags

NGSS.MS-PS4-2

what we call the phenomenon when a light ray changes its direction when passing from one transparent medium to another transparent medium?

• Reflection of light

• Refraction of light

• Dispersion of light

• None of these

How the speed of light changes when it travels from optically rarer to optically denser medium?

• No change in its speed

• Slow down

• Get faster

• Double of the previous speed

Tags

NGSS.HS-PS4-1

What is the unit of refractive index?

• Metre per second

• Metre per second square

• Kilometre per second

• No units

In absolute refractive index we compare the speed of light of a medium with the speed of light in__________.

• Water

• Glass

• Vacuum

• Diamond

The above image is an example of a ____________. They happen because cool and hot air have a different ___________________________.

• Mirage; angle of incidence

• Optical fibre; refractive index

• Lateral inversion; angle of reflection

• Mirage; refractive index

Tags

NGSS.MS-PS4-2

The refractive index of a substance

• Is the degrees between the reflected ray and the normal

• Is a number that tells you how much the light bends when going from air into that substance

• Is a number that tells you how fast the light bends when going from air into that substance

• Is the degrees between an incident ray and the normal

Refraction happens because light travels _____________ in glass or water compared to air

• Faster

• The same

• At the speed of sound

• Slower

Tags

NGSS.MS-PS4-2

Refraction is

• The bending of light as it passes through the one substance at an angle

• A light beam shone in one end of an optical fibre and totally internally reflected at the other end

• The bending of light as it passes from one substance to another at an angle

• A type of convex object used in everyday life

Tags

NGSS.MS-PS4-2