Light, reflection, refraction

The bending of light at the interface of two different mediums is

• Reflection

• Magnification

• Refraction

• Polarization

A ray of light travelling from glass slab to Air, then the refracted ray bends

• Towards normal

• At normal

• Away from the normal

• Reflect back to the same medium

3. Refractive index of four medium A, B, C and D are 1.44, 1.50, 1.65 and 1.36 respectively. The velocity of light is minimum in

• medium B

• medium D

• medium C

• medium A.

Tags

NGSS.HS-PS4-1

A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:

• 120 degree

• 90 degree

• 45 degree

• Zero degree

The refractive index of water is 1.33. The speed of light in water will be

• 1.33 × 10power of 8 m/s

• 3 × 10 power of 8 m/s

• 2.26 × 10 power of 8 m/s

• 2.66 × 10 power of 8 m/s

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

Observe the table

• Water

• Air

• Rock salt

• Diamond

Tags

NGSS.HS-PS4-1

Observe diagram, identify P, Q, R

• P - angel of emergent, Q – angle of incident , R- angel of refraction

• P - angel of refraction, Q – angle of incident , R- angel of emergent

• P - angel of emergent, Q – angle of refraction , R- angel of incident

• P - angel of incident, Q – angle of refraction , R- angel of emergent

Identify the incident ray and emergent ray from the given figure

• Incident ray - OS , emergent ray – ST

• Incident ray- AO , emergent ray - OS

• Incident ray- AO , emergent ray - ST

• Incident ray - ST , emergent ray - AO

A convex lens is

• Thicker throughout

• Thinner throughout

• Thinner in middle, thicker at edges

• Thicker in the middle, thinner at edges

If the image formed by lens is diminished in size and erect for all positions of the object what type of lens is this

• Convex

• Concave

• Reflection lens

• Plane mirror