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The densities of two substances are in t...

The densities of two substances are in the ratio `5 : 6` and the specific heats are in the ratio `3:5` respectively. The ratio of their thermal capacities per unit volume is

A

`2:1`

B

`1 : 2`

C

`4 : 1`

D

`1 : 4`

Text Solution

Verified by Experts

The correct Answer is:
B
`H=mS = rho VS rArr (H_(1))/(H_(2)) = ((rho_(1))/(rho_(2)))((S_(1))/(S_(2)))`.
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Knowledge Check

  • The densities of two substances are in the ratio 2: 3 and their specific heats are 0.12 and 0.09 CGS units respectively. The ratio of their thermal capacities per unit volume is

    A
    `8: 9`
    B
    `1: 2`
    C
    `3: 2`
    D
    `4: 9`

  • The ratio of densities of two substances is 2 : 3 and their specific heats are in the ratio 3:4. The ratio of their thermal capacities for unit volume is

    A
    `1:1`
    B
    `1 :2`
    C
    `2 :1`
    D
    `8 :9`

  • The vapour densities of two gases are in the ratio of 2 : 5 Their molecular masses are in the ratio of

    A
    `5 : 2`
    B
    `1 : 3`
    C
    `2 : 5`
    D
    `3 : 1`