5NA Light (Reflection & Refraction)

A light ray is incident from water to air. Which of the refracted rays is correct?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

Which of the following factors contributes to the bending of light?

• Change of speed of light

• Change of density of light

• Change of colour of light

• Change of energy of light

Tags

NGSS.MS-PS4-2

A light ray is incident into a glass block as shown.

Which of the following is the correct expression to find the refractive index of the glass block?

• sin p / sin q

• sin p / sin s

• sin q / sin r

• sin s / sin p

Which of the following characteristics are correct for the image formed in a plane mirror?

I. Upright

II. Inverted

III. Real

IV. Same size as the object

V. Virtual

• I, II, III

• I, III, IV

• I, IV, V

• III, IV, V

Tags

NGSS.MS-PS4-2

A mirror is titled at an angle of 20°. A light ray is incident at the surface of a plane mirror at an angle of 20°.

What is the angle of reflection?

• 20°

• 40°

• 50°

• 70°

The diagram shows a patient having her eyes tested. A chart with letters on it is placed behind her and she sees the chart reflected in a plane mirror.

How far away from the patient is the image of the chart?

• 2 m

• 4 m

• 5 m

• 7 m

Three students stand 2 m apart in front of a plane mirror which is 3 m long.

Student Y is standing opposite the mid-point of the mirror.

How many students can see the images of the other two?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS4-2

The diagram shows a ray of light entering a glass block of refractive index 1.41 at an angle of incidence of 45°.

By how many degrees does the light ray change direction when entering the glass?

• 15

• 30

• 45

• 90

A ray of light travels from air into a glass block.

Which diagram correctly shows the path of the ray through the glass block?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

Which block is made from the material with a refractive index of 1.52?

• A

• B

• C

• D