10-2.Transmission of Heat
medium

ધ્રુવ પ્રદેશમાં તળાવ પર બરફના સ્તરની જાડાઇ $x cm$ થી $y cm$ થતાં લાગતો સમય શોધો.વાતાવરણનું $ - {\theta ^o}C $ તાપમાન છે.

A

$ \frac{{(x + y)(x - y)\rho L}}{{2k\theta }} $

B

$ \frac{{(x - y)\rho L}}{{2k\theta }} $

C

$ \frac{{(x + y)(x - y)\rho L}}{{k\theta }} $

D

$ \frac{{(x - y)\rho Lk}}{{2\theta }} $

Solution

(a) Since $t = \frac{{\rho L}}{{2k\theta }}(x_2^2 – x_1^2)$

$\therefore $$t = \frac{{\rho L}}{{2k\theta }}({x^2} – {y^2}) = \frac{{\rho L(x + y)(x – y)}}{{2K\theta }}$

Standard 11
Physics

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