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 351: Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length Options:
  A) 12.4 m
  B) 15.7 m
  C) 17.5 m
  D) 18.6 m
  Show Answer
  The correct answer is B .
• Question 352: The main purpose of the transformer in an a.c radio set is to? Options:
  A) increase power to the radio
  B) step up the voltage
  C) convert energy from a.c to d.c
  D) step down the voltage
  Show Answer
  The correct answer is D .
• Question 353: Which of the following pairs is NOT part of the electromagnetic spectrum? i. Radio waves. ii. Beta rays. iii. Gamma rays. iv. Alpha rays Options:
  A) i and ii
  B) iii and iv
  C) i and ii
  D) ii and iv
  Show Answer
  The correct answer is D .
• Question 354:

  Which of the following is a type of wave that is both mechanical and longitudinal?

  Options:
  A) Water waves
  B) Seismic waves
  C) Sound waves
  D) Light waves
  Show Answer
  The correct answer is C .
• Question 355:

  A single force which produces the same effect as a set of forces acting together at a point is known as the

  Options:
  A) component
  B) equilibrant
  C) resultant
  D) resistant
  Show Answer
  The correct answer is C .
• Question 356: The heat produced in a conductor carrying an electric current is Options:
  A) inversely proportional to the current and the resistance
  B) directly proportional to the current, resistance and the time
  C) inversely proportional to of the resistance, current and the time
  D) directly proportional to the square of the current, the resistance and the time
  Show Answer
  The correct answer is D .
• Question 357: Which of the following properties make the convex mirror useful as a driving mirror? i. the image is real. ii. the image is erect. iii. it has a wide field of view. iv. the image is magnified. Options:
  A) i, ii, and iv
  B) i, ii, iii
  C) ii and iii
  D) i and iii
  Show Answer
  The correct answer is C .
• Question 358: An ebonite rod rubbed with fur attracts a glass rod rubbed with silk because Options:
  A) ebonite has a negative charge while glass has a positive charge
  B) ebonite has a positive charge while glass has a negative charge
  C) both have negative charges
  D) both have positive charges
  Show Answer
  The correct answer is A .
• Question 359: A platinum-resistance thermometer has a resistance of 59 at 0^oC and 9Ω at l00^oC. Assuming that resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 45^oC Options:
  A) 13.9 Ω
  B) 8.9 Ω
  C) 6.8 Ω
  D) 3.2 Ω
  E) 1.8 Ω
  Show Answer
  The correct answer is C .
• Question 360:

  

  The equivalent capacitance for the circuit drawn above is

  Options:
  A) 18µf
  B) 4µf
  C) 2µf
  D) 12µf
  E) 13µf
  Show Answer
  The correct answer is B .