Grade 8 Science Revision- Light

The ray of light which strikes the reflecting surface is called ___________.

Which property of light is illustrated in this image?

• Light travels at 300,000,000m/s

• Light travels in straight lines

• Light is a wave

• Light is a particle

What is the name given to a material which lets most of the light pass through it?

• Opaque

• Translucent

• Clear

• Transparent

Which of the following describes an image formed in a plane mirror?

• Laterally inverted

• Same size as object

• Same distance behind mirror as object is in front

• Enlarged

• Inverted

Which letter is the normal line?

• a

• b

• c

• d

• e

At what angle will the reflected ray strike the second mirror?

• 30

• 45

• 60

• 90

Which letter is the reflected ray?

• a

• b

• c

• d

• e

What is the angle of incidence?

• 10°

• 30°

• 60°

• 80°

What is the angle of incidence?

• 10°

• 30°

• 60°

• 80°

1. Sami is 50 cm from a vertical mirror. He moves 20cm away. The distance between his image and himself is then ………….

• 100cm

• 120cm

• 140cm

• 40cm