Question

Class 11th☺️
Physics:Calorimetry & heat transfer!!
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Two identical rods are connected between two
containers. One of them is at 100°C. If rods are connected in parallel, then the rate of melting of ice is g1 gs^-1. if they are connected in series then the rate is g2 gs^-1. The ratio g2/g1 is ?

(a) 2
(b) 4
(c)1/2
(d)1/4
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Answer 1

Explanation:

HEY MATE ........

$q1 = \frac{k2a(100)}{l} \\ \\ q2 = \frac{a(100)}{ \frac{l}{k} + \frac{l}{k} } = \: \frac{ka(100)}{2} \\ \\ \\ \frac{q1}{q2} = \frac{ka(100)}{2l} \times \frac{l}{k2a(100)} \\ \\ \\ \implies \: \frac{1}{4}$

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Answer 2

Answer:

Option d) 1/4

Explanation:

$q1=lK2A(100)</p><p>q2=kl+klA(100)=2lKA(100)</p><p>∴q1q2=2lKA(100)×K2A(100)l=41.</p><p></p><p>$