light -grade 8

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

2. The imaginary line perpendicular to the mirror is called the

• Incident ray

• reflected ray

• normal line

3. The angle between the reflected ray and the normal line is called the:

• Angle of incidence

• Angle of reflection

• angle of convergent

4. If the angle of incidence is 45 degree, what is the angle of reflection?

• 90°

• 45°

• 180°

The Law of reflection states that - The angle of incidence is .................. the angle of reflection

• equal to

• double

• half

The ray of light that strikes a mirror is called ________

• an incident ray

• a reflected ray

• a normal ray

Why can you see most objects?

• they emit light

• light refracts through them

• light reflects off them

• They absorb light

The principle behind the appearance of a rainbow in the sky?

• a. Diffusion

• b.Dispersion

• c.Reflection

• d. Refraction

Sunlight is

• not light at all
• red light
• yellow light
• white light

Tags

NGSS.MS-LS1-6

Light enters this part of the eye first.

• Retina
• Cornea
• Lens
• Cones

Tags

NGSS.MS-LS1-8