Light (IGCSE)

Front

A ray of light is reflected by two parallel plane mirrors X and Y. Which statement is correct? Options: The angle of incidence at mirror X is 30°., The angle of incidence at mirror Y is 60°., The angle of reflection at mirror X is 120°., The angle of reflection at mirror Y is 0°.

Back

The angle of incidence at mirror Y is 60°.

Front

An eye views an object O by reflection in a plane mirror. Which is the correct ray diagram? Options: A, B, C, D

Back

C

Front

The image of the point on the lamp formed by the mirror is

Back

at P and is virtual.

Front

A semi-circular block is made from a plastic. A ray of light passes through it at the angles shown. To two decimal places, what is the refractive index of the plastic? Options: 1.25, 1.41, 1.51, 1.61

Back

1.51

Front

Is light an example of a transverse wave?

Back

True

Front

The critical angle in the diagram is 43 degrees. What is the angle of refraction at the critical angle?

Back

Equal to 90 degrees

Front

Section B1a: Given that the angle of incidence = 30 degrees. Which is the correct diagram? Options: A, B, C, D

Back

A

Front

If a capital letter R is seen in an ordinary mirror, what does it look like? Options: A, B, C, D

Back

D

Front

This reflection is

Back

diffuse.

Front

Images in a plane mirror are: real, larger, same size, smaller

Back

same size