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JEE Main20211 Sep 2021Evening ShiftPhysicsMotion in Two DimensionsActual

The ranges and heights for two projectiles projected with the same initial velocity at angles 42 ° and 48 ° with the horizontal are R 1 , R 2 and H 1 , H 2 respectively. Choose the correct option:

Options

  1. AR 1 = R 2 and H 1 = H 2
  2. BR 1 = R 2 and H 1 < H 2
  3. CR 1 > R 2 and H 1 = H 2
  4. DR 1 < R 2 and H 1 < H 2

Correct answer

B. R 1 = R 2 and H 1 < H 2

Step-by-step solution

Range R = u 2 sin 2 θ g and same for θ and 90 - θ . So, same for 42 ° and 48 ° Maximum height H = u 2 sin 2 θ 2 g , so height is high for higher θ . So, H for 48 ° is higher than H for 42 ° .

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