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NEET2008PhysicsMotion in Two DimensionsActual

Assertion : When the velocity of projection of a body is made (n ) times, its time of flight becomes (n ) times. Reason : Range of projectile does not depend on the initial velocity of a body.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

C. If assertion is true but reason is false

Step-by-step solution

As time of flight, T= 2 u g T^ = 2(n u) g =n T But range R= u^2 2 g R^ = n^2 u^2 2 g =n^2 R .

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