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The reading of Centigrade thermometer co...

The reading of Centigrade thermometer coincides with that of Fahrenheit thermometer in a liquid. The temperature of the liquid is

A

`-40^(@)C`

B

`313^(@)C`

C

`0^(@)C`

D

`100^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
Let the readings of two thermometers coincide at C = F
= x
As `(C )/(5)=(F-32)/(9) therefore (x)/(5)=(x-32)/(9)`
or `9x=5x-160 rArr 4x=-160, x = -40^(@)C`
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