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JEE Main Physics question

PhysicsMotion in a PlaneJEE Main

When a projectile is projected at a certain angle with the horizontal, its horizontal range is and time of flight is . When the same projectile is thrown with the same speed at some other angle so as to have the same range , the time of flight is . The product is

Answer: (B)

Solution

Two angles giving the same range are complementary, and . ,

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Question ID VK-157975