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 951: The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 ⁶m²is?
  [Resistivity of the wire = 4 x 10^-7 Ω m] Options:
  A) 5.0 Ω
  B) 0.5 Ω
  C) 10.0 Ω
  D) 1.0 Ω
  Show Answer
  The correct answer is D .
• Question 952:

  

  Three 2-µF capacitors are arranged as seen in the circuit above . The effective capacitance between E and F is

  Options:
  A) 0.75µF
  B) 1.33µF
  C) 3.00µF
  D) 6.00µF
  Show Answer
  The correct answer is B .
• Question 953: The total length of a spring when a mass of 20g is hung from its end is 14cm, while its total length is 16cm when a mass of 30g is hung from the same end. Calculate the unstretched length of the spring assuming Hooke's law is obeyed. Options:
  A) 9.33cm
  B) 10.00cm
  C) 10.66cm
  D) 12.00cm
  E) 15.00cm
  Show Answer
  The correct answer is B .
• Question 954:

  Which of the following is/are not true about the heat capacity of a substance?

  (i) It is an intensive property
  (ii) Its S.I unit is $jK-1$
  (iii) It is an extensive property
  (iv) Its S.I unit is $jkg-1$

  Options:
  A) (i) and (iii) only
  B) (i), (ii) and (iv) only
  C) (i) and (iv) only
  D) (ii) and (iii) only
  Show Answer
  The correct answer is C .
• Question 955: An orange fruit drops to the ground from the top of a tree 45m tall. How long does it takes to reach the ground? (g = 10ms^-2) Options:
  A) 3.0s
  B) 4.5s
  C) 6.0s
  D) 7.5s
  E) 9.0s
  Show Answer
  The correct answer is A .
• Question 956:

  Which of the following is consistent with Charles' law?

  I. 

  II. 

  III. 

  IV. 

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is A .
• Question 957:

  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) $\frac{m{r}^2}{x}$
  C) $\frac{mr}{v}$
  D) $\frac{mv}{r^2}$
  Show Answer
  The correct answer is A .
• Question 958: The speed of sound travelling in various media increases in the order: Options:
  A) air, iron bar, water
  B) air, water, iron bar
  C) iron, bar water, air
  D) water, air, iron bar
  E) water, iron bar, air
  Show Answer
  The correct answer is B .
• Question 959: Which of the following symbolic representations is correct for an atom X with 22 electrons and 43 neutrons? Options:
  A) ${}_{22}^{43}X$
  B) ${}_{43}^{22}X$
  C) ${}_{43}^{65}X$
  D) ${}_{22}^{65}X$
  Show Answer
  The correct answer is D .
• Question 960:

  

  Find the effective resistance in the diagram above

  Options:
  A) 6 Ω
  B) 12 Ω
  C) 18 Ω
  D) 24 Ω
  Show Answer
  The correct answer is D .