- 1. Two point charges, +Q and -Q, are placed 5 cm apart. What is the electric field strength at a point midway between them?
A) 0 N/C
B) kQ/4ε₀
C) 2kQ/ε₀
D) kQ/2ε₀
- 2. A positive charge is moved against the direction of an electric field. What happens to the potential energy of the charge?
A) Remains constant
B) Decreases
C) Depends on the charge magnitude
D) Increases
- 3. A parallel plate capacitor with plate area A and separation d is connected to a battery of voltage V. What is the electric field between the plates?
A) V/(ε₀d)
B) V/(ε₀Ad)
C) Vd/(ε₀A)
D) V/(ε₀A)
- 4. A wire of resistance 8 Ω is connected in series with another wire of resistance 4 Ω. What is the equivalent resistance?
A) 8 Ω
B) 4 Ω
C) 3 Ω
D) 12 Ω
- 5. A circuit has a 12 V battery connected to three resistors in series: 4 Ω, 6 Ω, and 8 Ω. What is the total current flowing through the circuit?
A) 0.5 A
B) 2 A
C) 1 A
D) 3 A
- 6. Ohm's law states that the current through a conductor is directly proportional to
A) Inverse of the resistance of the conductor
B) Resistance of the conductor
C) Voltage across the conductor
D) Square of the voltage across the conductor
- 7. A current-carrying wire produces a magnetic field. What happens to the magnetic field if the current is doubled?
A) Quadruples
B) Halves
C) Remains the same
D) Doubles
- 8. A straight wire carries a current of 2 A. What is the magnitude of the magnetic field at a distance of 4 cm from the wire?
A) 4.0 × 10-6 T
B) 2.0 × 10-6 T
C) 1.0 × 10-6 T
D) 3.0 × 10-6 T
- 9. The magnetic field inside a solenoid is stronger when
A) The number of turns is increased
B) The diameter of the solenoid is decreased
C) The length of the solenoid is increased
D) The current through the solenoid is decreased
- 10. In an AC circuit, the voltage across a resistor is given by V = V₀sin(ωt). What is the peak voltage?
A) V₀
B) 2V₀
C) √2V₀
D) V₀/2
- 11. The electric field inside a conductor in electrostatic equilibrium is
A) Zero
B) Constant
C) Varies with distance
D) Varies with time
- 12. Two point charges, +Q and -2Q, are placed 10 cm apart. At which point between the charges is the electric field zero?
A) 8 cm from +Q
B) 4 cm from +Q
C) 6 cm from +Q
D) 2 cm from +Q
- 13. A charge of 2 μC experiences a force of 4 N in an electric field. What is the magnitude of the electric field?
A) 16 N/C
B) 2 N/C
C) 8 N/C
D) 4 N/C
- 14. A circuit has a 12 V battery connected to three resistors in parallel: 2 Ω, 3 Ω, and 6 Ω. What is the total resistance of the circuit?
A) 1 Ω
B) 2 Ω
C) 3 Ω
D) 4 Ω
- 15. A wire of resistance 10 Ω carries a current of 2 A. What is the voltage across the wire?
A) 21 V
B) 12 V
C) 20 V
D) 2V
- 16. Which of the following materials is a good conductor of electricity?
A) Wood
B) Glass
C) Rubber
D) Copper
- 17. The strength of the magnetic field inside a solenoid depends on
A) The temperature of the solenoid
B) The material of the solenoid core
C) The number of turns and current flowing through the solenoid
D) The length and diameter of the solenoid
- 18. A moving charge experiences a magnetic force when
A) The charge is at rest
B) The charge is moving perpendicular to the magnetic field
C) The charge is moving opposite to the direction of the magnetic field
D) The charge is moving parallel to the magnetic field
- 19. The charge is moving opposite to the direction of the magnetic field
A) Left-hand rule
B) Right-hand rule
C) Ampere's law
D) Gauss's law
- 20. In an AC circuit, the phase difference between the voltage and current is 90 degrees in a
A) Purely inductive circuit
B) Purely resistive circuit
C) Combination of inductive and capacitive circuit
D) Purely capacitive circuit
- 21. The electric field lines around a positive point charge
A) Radially outward
B) Radially inward
C) Elliptical
D) Circular
- 22. The electric field between two oppositely charged parallel plates is
A) Indeterminate
B) Zero
C) Non-uniform
D) Uniform
- 23. Coulomb's law states that the force between two charges is directly proportional to
A) The inverse of the square of the distance between
B) The product of their magnitudes
C) All of the above
D) The square of the distance between them
- 24. A circuit has a 9 V battery connected to a resistor. If the current in the circuit is 3 A, what is the resistance of the resistor?
A) 6 Ω
B) 27 Ω
C) 9 Ω
D) 3 Ω
- 25. Kirchhoff's junction rule is based on the principle of
A) Conservation of energy
B) Conservation of charge
C) Conservation of momentum
D) Conservation of mass
- 26. The unit of electric power is
A) Watt (W)
B) Joule (J)
C) Volt (V)
D) Ohm (Ω)
- 27. The magnetic field inside a solenoid with a ferromagnetic core is
A) Zero
B) Weaker than in an air-core solenoid
C) The same as in an air-core solenoid
D) Stronger than in an air-core solenoid
- 28. The force experienced by a current-carrying conductor in a magnetic field is maximum when the angle between the conductor and magnetic field is
A) 0 degrees
B) 45 degrees
C) 180 degrees
D) 90 degrees
- 29. Ampere's law relates the magnetic field around a closed loop to the
A) Resistance of the loop
B) Voltage across the loop
C) Current passing through the loop
D) Electric field inside the loop
- 30. The impedance of a purely resistive circuit is equal to
A) Zero
B) The resistance of the circuit
C) The reactance of the circuit
D) The sum of the resistance and reactance
- 31. The state of a body at rest or in uniform motion is .........
A) Equilibrium
B) Resultant
C) Moment
D) Equilibrant
- 32. ......... is the product of the mass of the body and its velocity
A) Motion
B) Collision
C) Momentum
D) Resultant
- 33. ......... is the single force acting alone which would produce the same effect as the two forces put together
A) Equilibrium
B) Equilibrant
C) Resultant
D) Moment
- 34. When taking a penalty kick, a player applied a force of 30N for a period of 0.05 seconds if the mass of the ball is 0.075 kg. Calculate the speed within which the ball moved.
A) 30 m/s
B) 20 m/s
C) 35 m/s
D) 25 m/s
- 35. ....... arises when two objects come in touch or in contact with each other
A) Elasticity
B) Momentum
C) Collision
D) Friction
- 36. One of these is an example of collision
A) Automatic
B) Static
C) Flush
D) Dynamic
- 37. A ball of mass 0.5 kg moving at a velocity of 28 m/s is suddenly hit by a force of 6N for 0.04 second. Find the new velocity.
A) 28.048 m/s
B) 18.06 m/s
C) 26.6 m/s
D) 18 m/s
- 38. ......... is referred to as the turning effect force about a point or axis
A) Motion
B) Moment
C) Resultant
D) Equilibrant
- 39. In elastic, collision ......
A) Loss energy
B) Loss momentum
C) Gain energy
D) None
- 40. To every action there is an equal and opposite reaction is Newton's
A) Second law
B) First law
C) Third law
D) Fourth law
- 41. The two types of curved mirrors are ..........
A) Concave and Convex
B) Artificial and Natural
C) Concrete and Cornered
D) Conflict and Complex
- 42. ......... is the line drawn through the poles of a mirror and the center of curvature
A) Principal axis
B) Radius of curvature
C) Pole
D) Principal focus
- 43. The point at which all rays parallel and close to the principal axis converge at reflection is ........
A) Center of curvature
B) Pole
C) Principal focus
D) Principal axis
- 44. ......... can be defined as the ratio of the image distance to the object distance
A) Magnification
B) Image distance
C) Object distance
D) Image height
- 45. Which of these is not true when object is located beyond
A) The image formed is same size as object
B) The image formed is real
C) The image formed is diminished
D) The image formed is inverted
- 46. A constant used to express the nature of medium through which light rays is propagated is .........
A) Magnification
B) Refractive index
C) Refraction
D) Reflection
- 47. The two types of prism are ......... and ........
A) Linear and Circular
B) Longitudinal and Transverse
C) Concave and Convex
D) Rectangular and Triangular
- 48. ......... is an unpleasant sound produced at different frequencies
A) Tone
B) Noise
C) Echo
D) Beat
- 49. The velocity of sound can be measured using the following method except
A) Stationary method
B) Resonance tune method
C) Wave method
D) Echo method
- 50. Which of these is not a characteristics of sound waves?
A) Loudness
B) Tone
C) Pitch
D) Ripple
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