A. 0°
B. 30°
C. 45°
D. 60°
E. 90°

Correct Answer:

Option B – 30°

Explanation

T = 2u sinθ/g

sinθ = Tg/2u
= 10 x 10/2 x 100
= 0.5

, θ = sin-10.5 = 30°

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