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प्रश्न
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उत्तर
Three characteristics of light are:-
(a). Light waves can travel through a vacuum.
(b). Light waves are transverse waves.
(c). The velocity of light in a vacuum is 3 x 108 m/s.
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संबंधित प्रश्न
State two uses of a plane mirror.
The perpendicular to the mirror at the point of incidence is called ______.
The reflection of light from a wooden surface is _________ reflection.
Out of the following, choose the substance which is translucent medium:
Show an incident ray AO and the normal ON a plan mirror. draw the reflected ray and then find the angle between the incident and reflected rays.
Differentiate between a reflection and a shadow
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.
