The performance of a refrigerator is described by________________?

Related Mcqs:

1. We can produce heat by________________?

   A. Frictional process
   B. Chemical processes
   C. Electrical processes
   D. All of the above

2. Internal resistance is the resistance offered by________________?

   A. source of EMF
   B. conductor
   C. resistor
   D. capacitor

3. The relation between the escape velocity V esc and orbital speed Vo is given by________________?

   A. V esc = 1/2Vo
   B. V esc = -2 Vo
   C. V esc = Vo
   D. V esc = 2Vo

4. For a simple pendulu,m the restoring force is caused by________________?

   A. Gravity
   B. Spring
   C. Hand
   D. All of these

5. The name of the photon for quantum of light was proposed by________________?

   A. Ampere
   B. Plank
   C. Thomson
   D. Einstein

6. A three-dimensional image is obtained by________________?

   A. Electron microscope
   B. Scanning electron microscope
   C. Magnetic imaging
   D. None of the above

7. Dimension of pressure is__________________?

   A. MLT
   B. ML-1T-1
   C. ML-1T-2
   D. ML-2T-2

8. We prefer mercury as a thermometric substance because______________?

   A. Over a wide range of temperature its expansion is uniform
   B. It does not stick to thermometer glass
   C. It opaque to light
   D. All of above

9. Average translational kinetic energy per molecule of an ideal gas is given by_____________?

   A. 3NaT/2R
   B. 2NaT/3
   C. 3RT/2Na
   D. 3Na/2RT

10. For the successful operation of Heat engine which condition should be met ?

    A. cyclic process
    B. operated at certain temperature difference
    C. both A and B
    D. none of these