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NDA General Science Physics Questions Part 3

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Question : 70

Total: 91

A ball is released from rest and rolls down an inclined plane, as shown in the following figure, requiring 4s to cover a distance of 100 cm along the plane :

Which one of the following is the correct value of angle 0 that the plane makes with the horizontal? (g=100cm/s2)

θ=sin−1(1/9⋅8)
θ=sin−1(1/20)
θ=sin−1(1/80)
θ=sin−1(1/100)

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