Which quantity is a state function_______________?

Related Mcqs:

1. In laser production the state in which more atoms are in the upper state than in the lower one is called_____________?

   A. Metal stable state
   B. Normal state
   C. Inverted population
   D. All the above

2. Which one is the derived quantity in SI units _____________?

   A. Electric current
   B. Electric charge
   C. Plane angle
   D. Amount of substance

3. An ideal standard of measurement of a base quantity has characteristics_______________?

   A. Accessible
   B. Invariable
   C. Transportable
   D. Only a and b are correct

4. Which one of the following is not vector quantity _______?

   A. Acceleration
   B. Displacement
   C. Speed
   D. Force

   Submitted by: Rashid Mehmood

5. An artificial satellite revolves round the Earth in circular orbit, which quantity remains constant?

   A. Angular Momentum
   B. Angular Displacement
   C. Linear Velocity
   D. None of the above

   Submitted by: Naveed Tahir

6. Excited atoms return to their ground state in_______________?

   A. 10-10s
   B. 10-8s
   C. 10-6s
   D. 10-9s

7. Ground state energy of the 4th orbit in a H-atom is_____________?

   A. 13.60 eV
   B. 3.40 eV
   C. 0.85 eV
   D. 1.51 eV

8. 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

9. The metastable state for an atom in laser light is_____________?

   A. 10-4 sec
   B. 10-5 sec
   C. 10-3 sec
   D. 10-8 sec

10. Numerical value of Boltzmanns constant is______________?

    A. 1.38×10-31JK-1
    B. 3.18×10-31JK-1
    C. 3.18×10-23JK-1
    D. 1.38×10-23JK-1