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Why can't we see anything in a dark room?

• A) Everything is black in colour.

• B) Our eyes do not work in darkness.

• C) No light reaches our eyes.

• D) All the light gets scattered.

A reflecting surface is curved outwards. Which of the following mirrors is it likely to be?

• A) Concave

• B) Plane

• C) Convex

• D) All of the above

What is a stream of light called?

• A) Ray

• B) Beam

• C) Twilight

• D) Sunlight

Which of the following letters will be seen without any change in a plane mirror?

• A) S

• B) T

• C) L

• D) P

Match the following terms of Light Properties.

• Reflection of (1) visible light

• 
• Specular Reflection

• 
• Reflection of all visible light

• 
• Diffuse Reflection

• 
• Absorption of all visible light

• 

If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?

• 50⁰
• 70⁰
• 45⁰
• 30⁰

The Law of Reflection:
The angle of incidence is _________ the angle of reflection

• bigger than
• the same as
• smaller than

Light travels in a straight line

• True
• False

In the diagram, which letter represents the angle of incidence?

• A

• B

• C

• D

Fire fly is a

• Non-living luminous body

• Plant body

• Living luminous body

• Heavenly body