1. What is the SI unit of electric current?
(A) Volt
(B) Ampere
(C) Ohm
(D) Coulomb
2. Which of the following is a scalar quantity?
(A) Velocity
(B) Acceleration
(C) Force
(D) Speed
3. What happens to the resistance of a conductor when its temperature increases?
(A) Increases
(B) Decreases
(C) Remains constant
(D) First increases then decreases
4. Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?
(A) Ohm’s Law
(B) Newton’s First Law
(C) Faraday’s Law
(D) Lenz’s Law
5. What is the value of acceleration due to gravity on Earth?
(A) 8.9 m/s²
(B) 9.8 m/s²
(C) 10.5 m/s²
(D) 9.2 m/s²
6. The phenomenon of splitting white light into its constituent colors is called:
(A) Diffraction
(B) Reflection
(C) Dispersion
(D) Refraction
7. What type of mirror is used to focus sunlight to a point?
(A) Plane mirror
(B) Concave mirror
(C) Convex mirror
(D) Cylindrical mirror
8. Which particle has a negative charge?
(A) Proton
(B) Neutron
(C) Electron
(D) Positron
9. What is the momentum of a body with mass 2 kg moving at a velocity of 3 m/s?
(A) 6 kg·m/s
(B) 5 kg·m/s
(C) 3 kg·m/s
(D) 9 kg·m/s
10. Which of the following waves require a medium to propagate?
(A) Light waves
(B) Radio waves
(C) Sound waves
(D) X-rays