Question

Equal amount of two substance A (15⁰C), B (25⁰C) is mixed. If the resultant temperature of mixture is 22⁰C then the ratio of specific heat of A and B is –

• A. $\frac{4}{3}$
• B. $\frac{3}{5}$
• C. $\frac{3}{7}$
• D. $\frac{4}{7}$

Answer 1

Answer: (C)

$\frac{3}{7}$

Answer 2

mS_A (22 – 15) = mS_B (25 – 22)

$\frac{S_{A}}{S_{B}} = \frac{3}{7}$