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प्रश्न
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उत्तर
Angle of reflection to the normal = angle of incidence to the normal = 20°
So the angle between incident ray and reflected ray = Angle of incidence + Angle of reflection = 20 + 20 = 40°
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संबंधित प्रश्न
State the characteristics of the image formed by a plane mirror.
State which surface of a plane mirror reflects most of the light incident on it: the front smooth surface or the back silvered surface.
An object 3 cm high produces a real image 4.5 cm high when placed at a distance of 20 cm from a concave mirror. Calculate:
- the position of image
- focal length of the concave mirror.
Find the odd one.
sun, candle, torch, pen
Define reflection.
We can see objects because of ______.
A burning candle in water
Take a shoe box, open on one side. Place a small lighted candle in it. Place a clear glass sheet (roughly 25 cm × 25 cm) in front of this candle figure. Try to locate the image of the candle behind the glass sheet. Place a glass of water at its position. Ask your friends to look at the image of the candle through the sheet of glass. Ensure that candle is not visible to your friends. Your friends will be surprised to see the candle burning in water. Try to explain the reason.
