Question

If the length of a cylinder on heating increases by 2%, the area of its

base will increase by

(a) 0.5% (b) 2%

(c) 1% (d) 4%​

Answer 1

Answer:

Correct option: (D)

4 % Explanation: Area ∝ L2  ∴ A ∝

L2  (dA / A) = [{2 ∙ dL} / L] ∴ (dA /

A) = 2 × 2 %= 4%

Answer 2

Answer:

Hello Correct answer is option D