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प्रश्न
A student had a ball, a screen and a torch in working condition. He tried to form a shadow of the ball on the screen by placing them at different positions. Sometimes the shadow was not obtained. Explain.
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उत्तर
Some of the reasons can be
- The screen is far away from the ball.
- The beam of light from the torch is falling parallel to the screen on the ball.
- The torch is kept away from the ball.
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संबंधित प्रश्न
Fill in the blank.
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Select the correct alternative.
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Tick the correct answer.
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How does the colour of an opaque object affect the colour of the shadow?
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What are the parts of shadow?
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
| O W S | A K E | O P A Q | U E O | B J E T | T S M |
| S H A D |
______ is always against, opposite side of light source.
The ______ is the darkest part of a shadow.
The lighter shade of shadow is the ______.
Three torches A, B and C shown in the following figure are switched on one by one. The light from which of the torches will not form a shadow of the ball on the screen.
On a sunny day, does a bird or an aeroplane flying high in the sky cast its shadow on the ground? Under what circumstances can we see their shadow on the ground?
