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Water is boiled in a rectangular steel t...

Water is boiled in a rectangular steel tank of thickness 2 cm by a constant temperature furnace. Due to vaporisation, water level falls at a steady rate of 1 cm in 9 minutes. Calculate the temperature of the furnace. Given K for steel `0.2 cal s^(-1) m^(-1) .^(@)C^(-1)`

A

`150^@C`

B

`110^@C`

C

`130^@C`

D

`200^@C`

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