Physics (School & Undergraduate)

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Q. What is the kinetic energy of an object with a mass of 2 kg moving at a velocity of 3 m/s?
  • A. 3 J
  • B. 6 J
  • C. 9 J
  • D. 12 J
Q. What is the kinetic energy of an object with a mass of 3 kg moving at a speed of 4 m/s?
  • A. 12 J
  • B. 24 J
  • C. 6 J
  • D. 48 J
Q. What is the latent heat of fusion for ice if 334 J is required to melt 1 g of ice?
  • A. 334 J/g
  • B. 667 J/g
  • C. 1000 J/g
  • D. 250 J/g
Q. What is the law that describes the relationship between the angles of incidence and refraction?
  • A. Snell's Law
  • B. Newton's Law
  • C. Hooke's Law
  • D. Faraday's Law
Q. What is the magnetic field strength at a distance of 0.1 m from a long straight wire carrying a current of 5 A?
  • A. 0.1 T
  • B. 0.01 T
  • C. 0.05 T
  • D. 0.02 T
Q. What is the main characteristic of a black body in physics?
  • A. It reflects all incident light.
  • B. It absorbs all incident light.
  • C. It emits no radiation.
  • D. It has a fixed temperature.
Q. What is the main characteristic of a semiconductor?
  • A. It conducts electricity poorly
  • B. It has a high melting point
  • C. It can conduct electricity under certain conditions
  • D. It is always a good conductor
Q. What is the main idea behind Einstein's mass-energy equivalence?
  • A. Mass can be converted into energy and vice versa.
  • B. Energy is always conserved.
  • C. Mass is a form of energy that cannot be transformed.
  • D. Energy can only be created, not destroyed.
Q. What is the main mechanism of heat transfer in a vacuum?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. None
Q. What is the main postulate of general relativity?
  • A. Gravity is a force between masses.
  • B. Mass warps spacetime, causing gravity.
  • C. Time is the same for all observers.
  • D. Light cannot escape from a black hole.
Q. What is the moment of inertia for a solid cylinder about its central axis?
  • A. 1/2 m r^2
  • B. m r^2
  • C. 1/3 m r^2
  • D. m r
Q. What is the moment of inertia for a solid cylinder rotating about its central axis?
  • A. 1/2 m r²
  • B. m r²
  • C. 2/5 m r²
  • D. 1/3 m r²
Q. What is the moment of inertia of a solid cylinder about its central axis?
  • A. 1/2 m r^2
  • B. 1/3 m r^2
  • C. m r^2
  • D. m r^2 / 2
Q. What is the momentum of a 10 kg object moving at 3 m/s?
  • A. 30 kg·m/s
  • B. 10 kg·m/s
  • C. 3 kg·m/s
  • D. 0 kg·m/s
Q. What is the momentum of a 2 kg object moving at a velocity of 3 m/s?
  • A. 6 kg·m/s
  • B. 5 kg·m/s
  • C. 3 kg·m/s
  • D. 2 kg·m/s
Q. What is the momentum of a 3 kg object moving at 4 m/s?
  • A. 12 kg·m/s
  • B. 7 kg·m/s
  • C. 15 kg·m/s
  • D. 10 kg·m/s
Q. What is the momentum of a 5 kg object moving at a velocity of 4 m/s?
  • A. 20 kg·m/s
  • B. 15 kg·m/s
  • C. 10 kg·m/s
  • D. 25 kg·m/s
Q. What is the net force acting on a 10 kg object that is accelerating at 2 m/s²?
  • A. 20 N
  • B. 10 N
  • C. 5 N
  • D. 2 N
Q. What is the net force acting on a 5 kg object accelerating at 2 m/s²?
  • A. 5 N
  • B. 10 N
  • C. 15 N
  • D. 20 N
Q. What is the net force acting on a rigid body in equilibrium?
  • A. Zero
  • B. Equal to its weight
  • C. Equal to its mass times acceleration
  • D. Equal to the applied force
Q. What is the net force acting on a system of particles in equilibrium?
  • A. Zero
  • B. Equal to the mass of the system
  • C. Equal to the acceleration of the system
  • D. Equal to the gravitational force
Q. What is the net force acting on an object in equilibrium?
  • A. Zero
  • B. Equal to its weight
  • C. Equal to its mass
  • D. Equal to the applied force
Q. What is the net force acting on an object in uniform motion?
  • A. 0 N
  • B. 10 N
  • C. 5 N
  • D. 20 N
Q. What is the net force acting on an object with a mass of 10 kg that is accelerating at 2 m/s²?
  • A. 5 N
  • B. 10 N
  • C. 20 N
  • D. 15 N
Q. What is the phase constant in simple harmonic motion?
  • A. It determines the amplitude
  • B. It determines the frequency
  • C. It determines the initial position and direction
  • D. It has no effect
Q. What is the photoelectric effect in the context of semiconductors?
  • A. Emission of electrons when light hits a material
  • B. Absorption of light by electrons
  • C. Reflection of light from a surface
  • D. Transmission of light through a material
Q. What is the photoelectric effect primarily evidence for?
  • A. The wave nature of light
  • B. The particle nature of light
  • C. The dual nature of light
  • D. The electromagnetic spectrum
Q. What is the photoelectric effect primarily evidence of?
  • A. Wave nature of light
  • B. Particle nature of light
  • C. Thermal energy transfer
  • D. Chemical reactions
Q. What is the potential difference (V) across a capacitor after it has been fully charged in an RC circuit?
  • A. V = 0
  • B. V = V0
  • C. V = R * I
  • D. V = C * I
Q. What is the potential difference across a 10 µF capacitor charged to 5 V?
  • A. 0.05 J
  • B. 0.05 C
  • C. 0.05 V
  • D. 0.05 F
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