Skip to content

+91 87932 47779

Email Us

Online Support

+91 87932 47779

Email Us At
- vgyanhubpune@gmail.com
- vgyanhubdhule@gmail.com

Menu

Email Us At
- vgyanhubpune@gmail.com
- vgyanhubdhule@gmail.com

Menu

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Menu

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Try Out Our Free Tests

qUESTIONS

Two Carnot engines A and B are operated in succession. The first one, A receives heat from a source at T₁=800 K and rejects to sink at T2 K. The second engine B receives heat rejected by the first engine and rejects to another sink at T3=300 K. If the work outputs of two engines are equal, then the value of T₂ is

The coefficient of performance of a refrigerator is 5 if the temperature inside freezer is -20°C, is temperature of the surroundings to which it rejects heat is

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

The temperature inside a refrigerator is t₂°C and the room temperature is t₁°C. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

In which of the following processes, heat is neither absorbed nor released by a system

Which of the following is not a thermodynamic co-ordinate?

Air in a cylinder is suddenly compressed by a piston, which is then maintained at the same position. With the passage of time

Which of the following parameters does not characterize the thermodynamic state of matter

Which of the following is incorrect regarding the first law of thermodynamics?

1 2 3 4 5 6 7 8 9

vgyanlogo

Access To All Courses from VgyanHub

Popular Courses

12th Physics | Maharashtra State Board | Full Course
Physics | JEE Main | Full Course
Physics | NEET | Full Course

Company

Home
About Us
Courses
Testimonials
Knowledge Base

Need Some Help?

Contact Us

© Copyright 2024 VgyanHub & Designed by PanGrow Tech Pvt. Ltd.