A boy is trying to see a candle with the help of two different shapes of rod. In which of the following cases (a or b), the candle will be clearly visible and why?

In case (a) because candle is a non-luminous object.

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In case (b) because candle is a non-luminous object.

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In case (b) because light travels in curved lines.

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In case (a) because light travels in straight lines.

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Solution

The correct option is D In case (a) because light travels in straight lines.
According to the rectilinear property of light, light travels in a straight line. Hence, the light from the candle will be able to reach the boy's eyes only through the straight rod in case (a), and not from the curved rod in case (b).

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A boy is trying to see a candle with the help of two different shapes of rod. In which of the following cases (a or b), the candle will be clearly visible and why? ​

A boy is trying to see a candle with the help of two different shapes of rod. In which of the following cases (a or b), the candle will be clearly visible and why?