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प्रश्न
Which of the following can never form a circular shadow?
विकल्प
A ball
A flat disc
A shoe box
An ice cream cone
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उत्तर
A shoe box
Explanation:
A shoe box is either rectangle or square in shape.
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संबंधित प्रश्न
Fill in the blank.
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Fill in the blank.
The less dark portion of a shadow is called the .................
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Draw a ray diagram to show the formation of umbra alone.
In the following diagram, draw rays to form a penumbra on the screen.

State the conditions when only the penumbra of an opaque object is obtained on the screen.
Tick the correct answer.
Umbra is a region of
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| 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.
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- Transparent objects allow light to pass through them partially.
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The shape of the shadow obtained in two positions is shown in the following figure.

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