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 2211:

  

  The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston

  Options:
  A) both valves are open
  B) P is open while Q is closed
  C) P is closed while Q is open
  D) Both valves are closed
  Show Answer
  The correct answer is B .
• Question 2212: A radioisotope has a decay constant of 10^-7s^-1. The average life of the radioisotope is Options:
  A) 1.00 x 10⁷s
  B) 6.93 x 10⁸s
  C) 1.00 x 10^-7s
  D) 6.93 x 10⁷s
  Show Answer
  The correct answer is B .
• Question 2213:

  I. Coherence
  II. Same frequency
  III. Same wavelength
  IV. Same Intensity

  Which of the conditions above are necessary to produce interference fringes?

  Options:
  A) I and III
  B) I, II and IV
  C) I, II and III
  D) II and III
  Show Answer
  The correct answer is C .
• Question 2214:

  An astronomical telescope is said to be in normal adjustment when the?

  Options:
  A) eye is accommodated
  B) focal length of an object lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 2215: A body of weight W N rest on a smooth plane inclined at an angle$\theta$^o to the horizontal. What is the resolved part of the weight in Newtons along the plane? Options:
  A) W sin$\theta$
  B) W cos$\theta$
  C) W sec$\theta$
  D) W tan$\theta$
  Show Answer
  The correct answer is A .
• Question 2216:

  Which of the following liquid is a poor conductor of electricity?

  Options:
  A) Distilled water
  B) Tap water
  C) Sea water
  D) Drinking water
  Show Answer
  The correct answer is A .
• Question 2217: What optical instrument can best be constructed with converging lenses of focal lengths 50cm and 5cm? Options:
  A) Compound microscope
  B) Galileo's telescope
  C) Terrestrial telescope
  D) Astronomical telescope
  Show Answer
  The correct answer is D .
• Question 2218: A good electric cell should have the following except Options:
  A) A minimum of polarization effect
  B) A long life
  C) A cheap and safe electrolytes
  D) Cost and dangerous of the cell
  Show Answer
  The correct answer is D .
• Question 2219:

  The main factor which affects the speed of sound wave is the?

  Options:
  A) properties of the medium
  B) amplitude of the sound wave
  C) intensity of the sound wave
  D) loudness of the sound wave
  Show Answer
  The correct answer is A .
• Question 2220: Which of the following expressions gives the linear magnification produced by a concave mirror of radius of curvature r, if U and V are the object and image distances respectively? Options:
  A) $\frac{V}{r}$ - 1
  B) $\frac{2V}{r}$ - 1
  C) $\frac{U}{r}$ - 1
  D) $\frac{2U}{r}$ - 1
  Show Answer
  The correct answer is D .