If four balls A, B, C, D are projected with same speed at angles of 15°, 30°, 45° and 60° with the horizontal respectively, the two balls which will fall at the same place will be-
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Question

If four balls A, B, C, D are projected with same speed at angles of 15°, 30°, 45° and 60° with the horizontal respectively, the two balls which will fall at the same place will be-

G1 Physics · Accepted Answer

For the same speed, equal ranges occur for complementary projection angles. Among 15°, 30°, 45° and 60°, the complementary pair is 30° and 60°. Therefore balls B and D land at the same place, option C.