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Q.

Is it true that sometimes the image of the ball will not appear on the screen if the torch angle is changed?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
This is because light travels in a straight line, and when the torch is placed at different positions, the image cannot be formed on the screen because the ball is placed in front of the screen. To form an image or shadow on the screen, the position of the torch light is perpendicular to it.
 
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