Physical Quantities and Measurement – Online MCQs Test – Physics 9th

1. 0.000 000 000 000 000 000 000 000 000 000 911 kg

2. Length, mass, electric current, time, intensity of light and amount of substance are examples of:

3. Ten identical steel balls each of mass 27g, are immersed in a measuring cylinder having 20cm³ of water. The reading of water level rises to 50cm³. What is the density of the steel?

4. A worldwide system of measurements in which the units of base quantities were introduced is called:

5. The study of internal structure of earth is known as:

6. Physicists are categorized into:

7. Volume, velocity, force, density, and acceleration are examples of:

8. The study of celestial objects with the help of laws of physics is known as:

9. The unit of luminous intensity is:

10. What is the reading of this micrometer in the following figure?

11. It deals with the constituents, structure, behavior and interaction of atomic nuclei.

12. All accurately known digits and first doubtful digit in an expression are known as:

13. The branch of physics that mainly concerned with the laws of motion and gravitation is called:

14. The following figure shows part of a Vernier scale, what is the reading on the Vernier scale?:

15. The term density of a substance is defined as:

16. 0 .00000034 has:

17. The numbers of reliably known digits in a value are known as:

18. Use of every instrument is restricted by smallest measurement that it can perform which is called:

19. The S.I unit for density is:

20. Zero mark on Vernier scale is slightly to the right than the zero error is called: