A postage stamp appears raised by 7.0 mm when placed under a rectangular glass block of refractive index 1.5. The thickness of the glass block is

21 mm

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1.5 mm

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70 mm

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3.0 mm

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Solution

The correct option is A
21 mm

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A postage stamp appears raised by 7.0 mm when placed under a rectangular glass block of refractive index 1.5. The thickness of the glass block is

The correct option is A 21 mm

The correct option is A
21 mm