A thin copper wire has a length L at 0°C. When heated to t°C, its length increases by 0.1%. If a thin copper plate of area (L×2L) is heated through the same range of temperature, its surface area will increase by

Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

A thin copper wire has a length L at $0 ° C$ . When heated to $t ° C$ , its length increases by $0.1 %$ . If a thin copper plate of area $(L \times 2 L)$ is heated through the same range of temperature, its surface area will increase by

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

$0.1 %$

$0.2 %$

$0.4 %$

$0.8 %$

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The surface area of plate is $A = L \times 2 L = 2 L^{2}$ . Taking logarithm, we have $\log A = \log 2 + 2 \log L$ . Differentiating, we get
$\frac{δ A}{A} = 2 \frac{δ L}{L} = 2 \times 0.1 % = 0.2 %$