A: The corpuscular theory fails in explaining the velocities of light in air and water.
B: According to corpuscular theory, the light should travel faster in a 'denser medium than in a rarer medium.

If both A and B are true but the B is the correct explanation of A

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If both A and B are true but the B is not the correct explanation of A

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If A is true but B is false

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If both the A and B are false

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If B is true but A is false

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Solution

The correct option is A If both A and B are true but the B is the correct explanation of A
Corpuscular theory fails to explain the velocity of light in air and water because it predicted light to have more velocity in denser medium where as the fact is just the opposite. So option (a) is correct.

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