JEE Main 2023 · 25 Jan · Shift 2

JEE Main 2023 Physics question on Kinematics

Two objects are projected with same velocity 'u' however at different angles α\alpha and β\beta with the horizontal. If α+β=90°\alpha + \beta = 90°, the ratio of horizontal range of the first object to the 2nd object will be:
  1. A.
    1 : 1
  2. B.
    1 : 2
  3. C.
    2 : 1
  4. D.
    4 : 1
Show answer and solution

Correct option: A

Solution

The horizontal range formula is R = u²sin(2θ)/g. For angles α and β where α + β = 90°, we have β = 90° - α, so sin(2β) = sin(2(90°-α)) = sin(180°-2α) = sin(2α). Both ranges are equal, giving ratio 1:1.

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