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Question

Assertion :The universal gravitational constant is the same as acceleration due to gravity Reason: Gravitational constant and acceleration due to gravity have the same units

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is D Both Assertion and Reason are incorrect
The gravitational constant (G) is the proportionality constant of the Newton's gravitational law. The acceleration (g) due to gravity is the gravitational field at earth's surface.
Thus, both G and g can not be same quantity.
The SI unit of G is N.m2/kg2 and of g is m/s2.
Thus, both G and g can not have same unit.
Hence, both assertion and reason are incorrect.

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