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A metal X of mass m at 0^@C is placed in...

A metal X of mass m at `0^@C` is placed in contact with another metal Y of mass 2m at `100^@C`. If the ratio of specific heats of X and Y is 4, then their final temperature at thermal equilibrium will be

A

`20^@C`

B

`25^@C`

C

`50^@C`

D

`75^@C`

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The correct Answer is:
A
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