Home
Class 12
PHYSICS
A refrigerator works between 4^(@)C and ...

A refrigerator works between `4^(@)C` and `30^(@)C`. It is required to remove `600 cal` of heat every second in order to keep the temperature of the refrigerator space constant.The power required is (Take `1cal= 4.2 J`)

A

236.5 W

B

2365 W

C

1.365 W

D

23.65 W

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A refrigerator works between 0^@C and 27^@C . If heat is to be removed from the refrigerated space at t/rate of 50 kcal/minute, the power of the motor of the refrigerator should be

Refrigerator A works between (-10)^@C and 27^@C while refrigerator B works between -20^@C and 17^@C , both removing heat equal to 2000 J from the freezer. Which of the two is the better refrigerator?

Find the heat required to convert 20 g of ice at 0⁰C into water at the same temperature . (Specific latent heat of fusion of ice = 80 cal/g)

The quantity of heat, required to raise the temperature of unit mass of gas through 1 °C when its pressure is kept constant, is called as

Calculate the amount of heat required to convert 80 g of ice at 0⁰C into water at the same temperature . (Specific latent heat of fusion of ice = 80 cal/g)

294 joules of heat is requied to rise the temperature of 2 mole of an ideal gas at constant pressure from 30^(@)C to 35^(@)C . The amount of heat required to rise the temperature of the same gas through the same range of temperature at constant volume (R=8.3 "Joules/mole"-K) is

A refrigerator has to transfer an average of 263 J of heat per second from temperature (-10)^@C to 25^@C . Calculate the average power consumed assuming ideal reversible cycle and no other losses.

70 calories of heat is required to raise the temperature 2 moles of an ideal gas at constant pressure from 30^@C to 35^@C . What is the amount of heat required to raise the temperature of the same gas from 30^@C to 35^@C at constant volume?

Practice problems : Amount of heat required to raise the temperature of water of mass m kg from 10 ⁰C to 60 ⁰C , is 35000 cal . Determine the value of m .

A calorimeter of mass 50 gm and specific heat capacity 0.42 J g^-1 ^@C^-1 contains some water at 20^@ C. A metal piece of mass 20 gm at 100^@ C is dropped into the calorimeter. After stirring, the final temperature of the mixture is found to be 22^@C .Find the mass of water used. (specific heat of metal piece= 0.3 J g^-1 ^@C^-1 specific heat of water = 4.2 J g^-1 ^@C^-1 )