Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 51: What type of reaction is represented by the following scheme? ${}_1^{2}X$ + ${}_1^{2}Y$ + ${}_2^{3}Z$ + ${}_0^{1}n$ + energy Options:
  A) Fusion reaction
  B) Fission reaction
  C) Chain reaction
  D) Radioactive decay
  Show Answer
  The correct answer is A .
• Question 52:

  

  PQRS is rectangular cell with PQ perpendicular to the magnetic field as shown above. If a current flows in the the direction PQRS in what direction will the coil move

  Options:
  A) Upwards
  B) Downwards
  C) TOwards The North Pole
  D) Towards The South Pole
  Show Answer
  The correct answer is A .
• Question 53: Which of the following are the correct SI units of the quantities indicated? i.N(Force) II. Mn^-1 (Torque) iii. watt(Power) iv. kgms^-2 Options:
  A) i and ii only
  B) i, ii and iii only
  C) i, ii, and iv only
  D) i and iii only
  Show Answer
  The correct answer is D .
• Question 54:

  A beam of light travelling in water is incident on a glass which is immersed in the water. The incident beam makes an angle of ${40}^o$ with the normal. Calculate the angle of refraction in the glass.

  [Refractive index of water = 1.33, Refractive index of glass = 1.5]

  Options:
  A) ${29.36}^o$
  B) ${25.37}^o$
  C) ${37.21}^o$
  D) ${34.75}^o$
  Show Answer
  The correct answer is D .
• Question 55: An a.c circuit of e.m.f 12V has a resistor of resistance 8Ω connected in series to an inductor of inductive reactance 16Ω and a capacitor capacitive reactance 10Ω. The current flow in the circuit is Options:
  A) 1.4A
  B) 1.2A
  C) 12.0A
  D) 14.0A
  Show Answer
  The correct answer is B .
• Question 56:

  Which of these is observed when air is pumped out of a discharge tube without lowering its pressure

  Options:
  A) the conductivity of the air increases
  B) the conductivity of the air decreases
  C) conduction does not occur
  D) spark are produced
  Show Answer
  The correct answer is C .
• Question 57: A plane inclined at angle $\theta$ has a velocity ratio of 10 : 1. The inclination of the plane to the horizontal is given by Options:
  A) tan$\theta$ = $\frac{1}{10}$
  B) cot$\theta$ = $\frac{1}{10}$
  C) cos$\theta$ = $\frac{1}{10}$
  D) sin$\theta$ = $\frac{1}{10}$
  Show Answer
  The correct answer is D .
• Question 58:

  A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is

  Options:
  A) 1.25 x 10${}^4$W
  B) 2.50x 10${}^4$W
  C) 1.25 x 10${}^6$W
  D) 2.50 x 10${}^6$W
  Show Answer
  The correct answer is A .
• Question 59: The main reason for making the cover of a vacuum flask airtight is to prevent heat loss by Options:
  A) convection
  B) conduction
  C) radiation
  D) evaporation
  Show Answer
  The correct answer is A .
• Question 60:

  A given mass of gas has a pressure of 80 Nm${}^{-2}$ at a temperature of 47 C. If the temperature is reduced to 27 C with volume remaining constant, the new pressure is?

  Options:
  A) 46.0 Nm${}^{-2}$
  B) 75.0 Nm${}^{-2}$
  C) 80.0 Nm${}^{-2}$
  D) 85.3 Nm${}^{-2}$
  Show Answer
  The correct answer is B .