Question

Assertion: A coin in a glass beaker appears to rise as the beaker is slowly filled with water. 

Reason: A ray of light starting from the coin goes from water to air and bends away from normal. Therefore, the bottom of the beaker on which the coin lies appears to be raised.

Options

• If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

• If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

• If Assertion is true, but the Reason is false.

• If Assertion is false, but the Reason is true.

Answer 1

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion. 

Explanation:

Light travelling from water (denser) into air (rarer) refracts away from the normal. When produced backward, the rays appear to come from an apparent depth shallower than the actual bottom, causing the coin to appear raised.