A body of mass 1 kg lies on smooth inclined plane. The block of mass m is pushed by a force F=10N horizontally as shown. The magnitude of net normal reaction on the block is :
A
10√2N
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B
10√2N
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C
10N
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D
None of these
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Solution
The correct option is A10√2N From F.B.D. of block, N2=F2+(mg)2
{as there is no acceleration in the direction of N} N=10√2N