1.  Which of the following measurements is most precise?

2. 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

3. The number of significant figures in 0.06900 is:

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

5. Light year is a unit of

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

7. Physical quantities are

8. Resolution is

9. Which of the following physical quantity is dimensionless?

10. Electron volt is a unit of

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

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

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

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

15. Absolute error of the measurement is

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

17. Which of the following groups have different dimensions?

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

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

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