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

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

3. 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

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

5. Physical quantities are

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

7. Which of the following physical quantity is dimensionless?

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

9. The number of significant figures in 0.06900 is:

10. Electron volt is a unit of

11. Absolute error of the measurement is

12. Which of the following groups have different dimensions?

13. Resolution is

14. Light year is a unit of

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

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

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

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

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

20.  Which of the following measurements is most precise?