NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF SOLIDS

1 Medium

1 of 1

Application +4 | -1

To break a wire of one metre length, minimum

40\;kg\;wt

, is required. Then the wire of the same material of double radius and 6 m length will require breaking weight

View answer and explanation

Correct option: D

160\;kg - wt

Option D is correct. The breaking weight is proportional to the cross-sectional area, which depends on the square of the radius. Doubling the radius and multiplying the length by 6 increases the breaking weight by a factor of 4.

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