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.

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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?

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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