AP ECET PHYSICS Multiple Choice Questions (MCQs)

1. Which of the following is a fundamental physical quantity?

a) Velocity

b) Force

c) Mass

d) Power

2. The SI unit of length is:

a) Meter

b) Centimeter

c) Kilometer

d) Foot

3. Which of the following is a derived unit?

a) Kelvin

b) Ampere

c) Newton

d) Meter

4. What is the SI unit of force?

a) Kilogram

b) Meter

c) Newton

d) Joule

5. What is the advantage of using SI units?

a) Universality

b) Simplicity

c) Easy conversion

d) All of the above

6. Which of the following is an example of a dimensionless quantity?

a) Acceleration

b) Force

c) Refractive index

d) Work

7. The dimensional formula of acceleration is:

a) [M L T^-2]

b) [M L T^-1]

c) [M L T^-3]

d) [M T^-2]

8. Which of the following is the SI unit of pressure?

a) Newton

b) Pascal

c) Joule

d) Watt

9. The dimensional formula of the gravitational constant G is:

a) [M^-1 L³ T^-2]

b) [M L^-3 T²]

c) [M L³ T^-2]

d) [M² L² T^-3]

10. Which of the following is NOT a base unit in the SI system?

a) Meter

b) Kilogram

c) Second

d) Newton

11. What does dimensional analysis help in determining?

a) The relationship between different physical quantities

b) The numerical value of a physical quantity

c) The physical quantity's unit

d) None of the above

12. The dimensional formula of force is:

a) [M L T^-1]

b) [M L T^-2]

c) [M L² T^-2]

d) [M L² T^-1]

13. What is the SI unit of energy?

a) Joule

b) Newton

c) Watt

d) Volt

14. Which of the following is a limitation of dimensional analysis?

a) It can only be used to check the consistency of equations

b) It cannot be used to derive equations

c) It cannot be used for quantities that are not related to each other

d) All of the above

15. The dimensional formula of power is:

a) [M L² T^-3]

b) [M L² T^-1]

c) [M L T^-2]

d) [M T^-1]