A person's eye is at point P and she is looking into the mirror as shown in the figure. Which of the numbered card(s) can she see reflected in the mirror ?

Cards with number 1 and number 2

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Cards with number 2 and number 3

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Cards with number 1, number 2, number 3

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Only the card with number 2

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Solution

The correct option is B Cards with number 2 and number 3
According to law of reflection:the angle of reflection of the light is equal to the angle of incidence and on the opposite side of the normal to the point of incidence. So, she would not be able to see the number 1 because it is normal to the mirror. Hence, she can see the Cards with number 2 and number 3.

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