Physics
Heat
Easy

Question

two bodies of equal masses are heated at a uniform rate under identical conditions. The change in temperature in the two cases is shown graphically. The ratio of their specific heats in the solid state is

  1. 1:3
  2. 1:2
  3. 2:1
  4. 1:4

The correct answer is: 1:3


    P left parenthesis straight capital delta t right parenthesis equals m s left parenthesis straight capital delta theta right parenthesis
fraction numerator left parenthesis straight capital delta theta right parenthesis over denominator left parenthesis straight capital delta t right parenthesis end fraction equals fraction numerator P over denominator m s end fraction
open parentheses fraction numerator straight capital delta theta over denominator straight capital delta t end fraction close parentheses subscript 1 equals 60 over 2 equals 30
open parentheses fraction numerator straight capital delta theta over denominator straight capital delta t end fraction close parentheses subscript 2 equals 40 over 4 equals 10
s subscript 1 over s subscript 2 equals open parentheses straight capital delta to the power of theta divided by subscript straight capital delta t end subscript close parentheses subscript 2 over open parentheses straight capital delta to the power of theta divided by straight capital delta t close parentheses subscript 1 equals 1 third

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