Question

The figure shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuously from 0 to 500 K at a constant rate. Ignoring any volume change, the following statement(s) is (are) correct to a reasonable approximation.

(A) The rate at which heat is absorbed in the range 0-100 K varies linearly with temperature T. 

(B) Heat absorbed in increasing the temperature from 0-100 K is less than the heat required for increasing the temperature from 400 – 500 K. 

(C) There is no change in the rate of heat absorption in range 400 – 500 K. 

(D) The rate of heat absorption increases in the range 200 – 300 K.

Answer 1

Correct option (A, B, C, D)

Explanation:

Option (A) is correct because the graph between (0 – 100 K) appears to be a straight line upto a reasonable approximation. 

Option (B) is correct because area under the curve in the temperature range (0 - 100 K) is less than in range (400 - 500 K.)

Option (C) is correct because the graph of C versus T is constant in the temperature range (400 - 500 K) 

Option (D) is correct because in the temperature range (200 – 300 K) specific heat capacity increases with temperature.