1. Which of the following is an example of a scalar quantity?
a) Velocity
b) Acceleration
c) Force
d) Distance
Answer: d) Distance
2. The SI unit of electric current is:
a) Watt
b) Ampere
c) Joule
d) Volt
Answer: b) Ampere
3. Newton’s first law of motion is also known as the law of:
a) Inertia
b) Acceleration
c) Action and reaction
d) Conservation of energy
Answer: a) Inertia
4. The phenomenon of change in the direction of a wave as it passes from one medium to another is called:
a) Reflection
b) Refraction
c) Diffraction
d) Interference
Answer: b) Refraction
5. Which of the following is a renewable source of energy?
a) Coal
b) Natural gas
c) Nuclear power
d) Solar power
Answer: d) Solar power
6. The unit of power is:
a) Joule
b) Newton
c) Watt
d) Ampere
Answer: c) Watt
7. Which of the following is NOT a fundamental force in nature?
a) Gravitational force
b) Electromagnetic force
c) Strong nuclear force
d) Centripetal force
Answer: d) Centripetal force
8. The process of converting a solid directly into a gas without passing through the liquid state is called:
a) Evaporation
b) Sublimation
c) Condensation
d) Melting
Answer: b) Sublimation
9. The resistance of an object depends on its:
a) Mass
b) Volume
c) Temperature
d) Density
Answer: c) Temperature
10. The force exerted on a charged particle moving in a magnetic field is called:
a) Electric force
b) Gravitational force
c) Magnetic force
d) Nuclear force
Answer: c) Magnetic force
11. The process by which a solid changes directly into a gas is called:
a) Vaporization
b) Condensation
c) Sublimation
d) Melting
Answer: c) Sublimation
12. The SI unit of pressure is:
a) Pascal
b) Newton
c) Joule
d) Watt
Answer: a) Pascal
13. Which of the following is a vector quantity?
a) Speed
b) Distance
c) Time
d) Velocity
Answer: d) Velocity
14. The law of conservation of energy states that:
a) Energy cannot be created
b) Energy cannot be destroyed
c) Energy can be created and destroyed
d) Energy can be transformed from one form to another
Answer: d) Energy can be transformed from one form to another
15. The rate of change of velocity is called:
a) Acceleration
b) Speed
c) Force
d) Momentum
Answer: a) Acceleration
16. Which of the following is NOT a type of electromagnetic radiation?
a) Radio waves
b) X-rays
c) Sound waves
d) Gamma rays
Answer: c) Sound waves
17. The power of a lens is measured in:
a) Diopters
b) Watts
c) Volts
d) Amperes
Answer: a) Diopters
18. The process of splitting an atomic nucleus into smaller parts is called:
a) Fusion
b) Fission
c) Radioactive decay
d) Ionization
Answer: b) Fission
19. According to the law of reflection, the angle of incidence is equal to the angle of:
a) Transmission
b) Reflection
c) Refraction
d) Diffraction
Answer: b) Reflection
20. The force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This statement is known as:
a) Newton’s first law of motion
b) Newton’s second law of motion
c) Newton’s law of gravitation
d) Newton’s third law of motion
Answer: c) Newton’s law of gravitation
