Assertion :The value of escape velocity from the surface of earth at $30^{o}$ and $60^{o}$ is $v_{1} = 2 v_{e}, v_{2} = 2 / 3 v_{e}$ . Reason: The value of escape velocity is independent of angle of projection.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect and Reason is correct

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Solution

The correct option is D Assertion is incorrect and Reason is correct
The gravitational field is conservative field.
So the energy required (kinetic) to get an object from earth surface to infinity is path independent.
This makes escape velocity independent of angle of projection.
So assertion is incorrect and reason is correct.

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Similar questions

30^{o}

60^{o}

v_{1} = 2 v_{e}

v_{e} = 2 / 3 v_{e}

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

H e

Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.
Reason: Equation of the x-axis is y = 0

Choose the correct option.

{2n}^{2}

180^{\circ}

i = 45^{\circ}

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