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 971: The strength of an electromagnet increase with Options:
  A) Increase in the number of turn of the coil
  B) Decrease in current with the coil
  C) Increase in the distance between the pole
  D) Increase in current without the coil
  Show Answer
  The correct answer is A .
• Question 972: The angle between the direction of the earth's magnetic field and the horizontal is called the Options:
  A) angle of deviation
  B) magnetic declination
  C) magnetic meridian
  D) angle of dip
  Show Answer
  The correct answer is D .
• Question 973:

  The Earth's magnetic equator passes through Jos in Nigeria. At Jos, the

  Options:
  A) angle of variation is zero
  B) magnetic declination is 90
  C) angle of dip is zero
  D) horizontal component at the Earth's field is zero
  Show Answer
  The correct answer is C .
• Question 974: In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is Options:
  A) 10 ohms
  B) 1 ohms
  C) zero
  D) 20 ohms
  E) infinite
  Show Answer
  The correct answer is E .
• Question 975: An inclined plane of angle $\theta$, acting as a simple machine, has a velocity ratio Options:
  A) sin$\theta$
  B) $\frac{1}{\text{sin}\theta }$
  C) cos$\theta$
  D) $\frac{1}{\text{cos}\theta }$
  E) sin$\theta cos\theta$
  Show Answer
  The correct answer is B .
• Question 976:

  I. Temperature.

  II. Density of air molecules

  III. Pressure

  IV. Pitch

  Which of the above will affect the velocity of sound in the air

  Options:
  A) I and II only
  B) II and IV only
  C) I,II and IV only
  D) I,II,III nad IV
  Show Answer
  The correct answer is A .
• Question 977: A temperature 20^oC is the same as Options:
  A) 36^oF
  B) 60^oF
  C) 11.1^oF
  D) 43.1^oF
  E) 25^oF
  Show Answer
  The correct answer is B .
• Question 978: Shadows and eclipses result from the Options:
  A) refraction of light
  B) rectilinear propagation of light
  C) defraction of light
  D) reflection of light
  Show Answer
  The correct answer is B .
• Question 979: Which of the following is NOT a force? Options:
  A) Friction
  B) Tension
  C) Upthrust
  D) Weight
  E) Impulse
  Show Answer
  The correct answer is E .
• Question 980:

  I. Low pressure.
  II. High pressure.
  III. High p.d.
  IV. Low p.d.

  Which combination of the above is true of the conduction of electricity through gases?

  Options:
  A) I and IV only
  B) I and III only
  C) II and IV only
  D) II and III only
  Show Answer
  The correct answer is B .