Light, Shadows and Reflections

What enables us to see objects around us?

• Torch

• Light

• Paper

The objects which emit their own light are known as______.

• Lighting objects

• Sun

• Luminous objects

Refer to the image provided. In which case would we see the candle (a or b)? Justify your answer.

What kind of object are our Eyelids? Are they Opaque/Translucent/Transparent?

• Transparent

• Opaque

• Translucent

Shadow of which object is the DULLEST?

• Opaque

• Translucent

• Transparent

Would it be possible in the imaginary world that your friend is standing in front of you but still you cannot see him?

What process is taking place in the mirror?

• Reflection

• Formation of Shadow

• Lateral Inversion

• Both 1 and 3

What process is taking place in the image provided?

• Reflection

• Refraction

• mixing of water

Images formed by a pin –hole camera are

• Inverted

• Small

• erected

• Both 1 and 2

Pinhole Camera is a simple application of the fundamental-

• light travels in a straight line (Rectilinear Propagation of Light)

• reflection of light

• shadow formation