Q.

The figure given below shows the cooling curve of pure wax material after heating. It cools from A to B and solidifies along BD. lf L and C arc respective values of latent heat and the specific heat of the liquid wax, the ratio L/C is

Moderate

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By Expert Faculty of Sri Chaitanya

100

answer is 4.

(Detailed Solution Below)

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Detailed Solution

Let the quantity of heat supplied per minute be Q.Then quantity of heat supplied in 2 min = mC(90 - 80)In 4 min, heat supplied = 2m C(90 - 80)∴2mC(90−80)=mL⇒LC=20

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