1. The number of significant figures in 0.06900 is:

2. The dimensional formula for angular momentum is same as that for:

3. Young’s modulus of steel is 1.9 × 10¹¹ N/m². When expressed in CGS units of dynes/cm², it will be equal to:

4. What is the number of significant figures in (3.20 + 4.80) × 10⁵?

5. Absolute error of the measurement is

6. The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?

7. Light year is a unit of

8. Electron volt is a unit of

9. The dimensions of kinetic energy is same as that of

10. The mean length of an object is 5 cm. Which of the following measurements is most accurate?

11. The weight of a body is 12g. This statement is not correct because:

12. Which of the following is not the name of physical quantity?

13.  Which of the following measurements is most precise?

14. Give that the displacement of a particle is given by x = A² sin² kt, where t denotes the time. The unit of k is

15. Resolution is

16. Physical quantities are

17. Which of the following groups have different dimensions?

18. ML-1T -2 is the dimensional formula of

19. A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are the path of the particle makes with the x-axis an angle of

20. Which of the following physical quantity is dimensionless?