NEET Questions Solved


The temperature of a wire of length 1 metre and area of cross-section 1cm2 is increased from 0°C to 100°C. If the rod is not allowed to increase in length, the force required will be α=10-5/°C and Y=1011N/m2

(a) 103N                     (b) 104N

(c) 105N                     (d) 109N

(b) F = force developed= YA αθ

    =1011×10-4×10-5×100=104N

Difficulty Level:

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