1. Sound waves having frequency in between 2KH and 4KH are called :

2. If the error in the measurement of radius of a sphere is 1 % then the error in the measurement of
the volume will be:

3. When two bodies stick together after collision, the collision is said to be:

4. How many waves lengths of Kr86 are contained in one meter?

5. Debye in the unit of :

6. A force of 10N acts on a body of mass 2 kg for 2 sec. Rate of change of momentum of body is :

7. A particle is projected horizontally from a height of 10cm. Time taken by it to hit the ground is :

8. The unit of surface energy per unit area may be expressed as:

9. A science student takes 100 observations in an experiment. Second time he takes 500
observations in the same experiment. By doing so the possible error becomes :

10. Light year in the unit of :