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 511:

  Which of the following statement(s) is/are correct about the isotopes of an elements? They have the same I. chemical properties

  II. nucleon number

  III proton number

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I and III only
  E) I,II and III
  Show Answer
  The correct answer is D .
• Question 512: The ground stated energy for the hydrogen atom is 5.44 x 10^-19J . If an electron drops from zero energy to ground state, calculate the frequency of the emitted radiation. [h = 6.6 x 10^-34 Js] Options:
  A) 5.0 x 10¹⁶ Hz
  B) 2.0 x 10¹⁶ Hz
  C) 5.0 x 10¹⁵ Hz
  D) 2.0 x 10¹⁵ Hz
  E) No correct option
  Show Answer
  The correct answer is E .
• Question 513: If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the Options:
  A) weight of P displaced is greater than that of Q
  B) weight of P displaced is less than that of Q
  C) volume of P displaced is greater than that of Q
  D) volume of P displaced is less than that of Q
  Show Answer
  The correct answer is A .
• Question 514: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 515: Musical instruments playing the same note can be distinguished from one another owing to the differences in their Options:
  A) quality
  B) pitch
  C) intensity
  D) loudness
  Show Answer
  The correct answer is A .
• Question 516:

  In an elastic collisionI. Energy is conserved

  II. Energy is decreased

  III. Energy is increased

  IV. Linear momentum conversed

  Options:
  A) I only
  B) II and IV only
  C) II only
  D) III only
  Show Answer
  The correct answer is B .
• Question 517:

  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 .
• Question 518:

  A projectile is fired from the ground level with a velocity of 300ms^-1 at an angle of a 30^o to the horizontal.

  Calculate the time taken to reach the maximum height?

  [g = 10ms^-2]

  Options:
  A) 30s
  B) 20s
  C) 25s
  D) 15s
  Show Answer
  The correct answer is D .
• Question 519: The force required to make an object of mass m, travelling with velocity v, turn in a circle of radius r is Options:
  A) $\frac{m{v}^2}{r}$
  B) $\frac{m{r}^2}{v}$
  C) $\frac{mr}{v}$
  D) $\frac{mv}{r^2}$
  E) $\frac{mv}{r}$
  Show Answer
  The correct answer is A .
• Question 520: Which of the following is a scalar quantity? Options:
  A) Tension
  B) Weight
  C) Impulse
  D) Mass
  Show Answer
  The correct answer is D .