The internal energy of the system increases__________?

Related Mcqs:

1. Which one is true for internal energy ?

   A. It is sum of all forms of energies associated with molecules of a system
   B. It is a state function of a system
   C. It is proportional to transnational K.E of the molecules
   D. All are correct

2. Geothermal energy is a _______________________ source of energy?

   A. non-renewable
   B. stable
   C. renewable
   D. none of the above

3. ________________ cells converts solar energy into electrical energy?

   A. rotory
   B. photovoltaic
   C. galvanic
   D. non of these

4. In normal state of energy the incident high energy photons will be______________?

   A. Stimulated
   B. Absorbed
   C. Cause X-ray emission
   D. Cause laser production

5. Internal resistance is the resistance offered by________________?

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

6. Which of the following branch of Physics deals with the internal structure of earth?

   A. Biophysics
   B. Geophysics
   C. Plasma physics
   D. Atomic physics

   Submitted by: AFNAN FAHIM KHATTAK

7. Which instrument is suitable to measure the internal diameter of a test tube?

   A. Vernier Callipers
   B. Screw Gauge
   C. Bore Gauge
   D. None

   Submitted by: Warraich

8. The energy band occupied by the valence electrons is called___________________?

   A. Energy state
   B. Valence band
   C. ve energy state
   D. conduction band

9. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

10. The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?

    A. Karl-Weins law
    B. Rayleigh-Jeans law
    C. Stephens law
    D. Plancks