the coefficient of performance of a refr...

the coefficient of performance of a refrigerator is 5. If the temperature inside freezer is `-20^(@)C`, the temperature of the surrounding to which it rejects heat is

A

`21^(@) C`

B

`31^(@) C`

C

`41^(@) C`

D

`11^(@) C`

Text Solution

Verified by Experts

The correct Answer is:

B

Topper's Solved these Questions

THERMODYNAMICS
AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -D) (Assertion - Reason Type Questions)|10 Videos
THERMODYNAMICS
AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -B) (Objective Type Questions)|30 Videos
THERMAL PROPERTIES OF MATTER
AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-J) Akash Challengers Questions|7 Videos
UNITS AND MEASUREMENTS
AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION - D)|15 Videos

Similar Questions

Explore conceptually related problems

The cofficient of performance of a refrigerator is 5. If the temperature inside freezer is -20^(@)C , the temperature of the surroundings to which it rejects heat is :

If the coefficient of performance of a refrigerator is 5 and operates at the room temperature ( 27^(@) C), find the temperature inside the refrigerator.

Calculate the coefficient of performance of refrigerator working between the temperatures 0^(@)C and 30^(@)C.

The coeffcient of performance of a refrigerator working between 10^(@)C and 20^(@)C is

The coefficient of performance of a Carnot refrigerator working between 30^(@)C & 0^(@)C is

Calculate the coefficient of performance of an ideal refrigerator working between -13 ^(@)C and 27^(@)C ?

A Camot refrigerator has freezer at temperature -8°C. The coefficient of performance of refrigerator is 5. The temperature of surrounding in which heat is rejected, will BE

A body cools from 50^@C " to " 40^@C in 5 min. If the temperature of the surrounding is 20^@C , the temperature of the body after the next 5 min would be

AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-ASSIGNMENT (SECTION -C) (Previous Year Questions)

A gas is compressed isothermally to half its initial volume. The same ...
Text Solution
|
4.0 g of a gas occupies 22.4 L at NTP. The specific heat capacity of t...
Text Solution
|
the coefficient of performance of a refrigerator is 5. If the temperat...
Text Solution
|
An ideal gas is compressed of half its initial volume by means of seve...
Text Solution
|
One mole of an ideal diatomic gas undergoes a transition from A to B a...
Text Solution
|
A Carnot engine, having an efficiency of eta= 1/10 as heat engine, is ...
Text Solution
|
Figure below shows two paths that may be taken by a gas to go from a s...
Text Solution
|
A monatomic gas at a pressure P, having a volume V expands isothermall...
Text Solution
|
A thermodynamic system undergoes cyclic process ABCDA as shown in figu...
Text Solution
|
A gas is taken through the cycle A rarr B rarr C rarr A, as shown. Wha...
Text Solution
|
The molar specific heats of an ideal gas at constant pressure and volu...
Text Solution
|
During an adiabatic process, the pressure of gas is found to be propor...
Text Solution
|
In the given (V - T) diagram, what is the relation between pressures p...
Text Solution
|
One mole of an ideal gas goes form an initial stateA to final state B...
Text Solution
|
A thermodynamics system is taken trough the cycle ABCD as shown in fig...
Text Solution
|
An ideal gas goes from state A to state B via three different processe...
Text Solution
|
During an isothermal expansion , a confined ideal gas does -150J of wo...
Text Solution
|
A mass of diatomic gas (gamma = 1.4) at a pressure of 2 atmosphere is ...
Text Solution
|
If Delta U and Delta W represent the increase in internal energy and w...
Text Solution
|
If C(p) and C(v) denote the specific heats (per unit mass) of an ideal...
Text Solution
|