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 501: Determine the distance between the consecutive antinodes XX if the wavelength is 66cm Options:
  A) 15cm
  B) 30cm
  C) 60cm
  D) 120cm
  Show Answer
  The correct answer is B .
• Question 502: A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine Options:
  A) 80.0%
  B) 76.6%
  C) 66.7%
  D) 60.7%
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  The correct answer is C .
• Question 503: A test tube of radius 1.0cm is loaded to 8.8g. If is placed upright in water, find the depth to which it would sink Options:
  A) 2.8cm
  B) 5.2cm
  C) 25.5cm
  D) 28.0cm
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  The correct answer is A .
• Question 504: A platinum resistance thermometer records 3.0$\mathrm{\Omega }$ at 0^oC and 8.0$\mathrm{\Omega }$ at 100^oC. If it records 6.0$\mathrm{\Omega }$ in a certain environment, The temperature of the medium is Options:
  A) 80^oC
  B) 60^oC
  C) 50^oC
  D) 30^oC
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  The correct answer is B .
• Question 505: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
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  The correct answer is C .
• Question 506: The power dissipated in an a.c. circuit with an r.m.s, current of 5A, r.m.s voltage of 10V and a phase angle of 60^o is Options:
  A) 25W
  B) 50W
  C) 120W
  D) 125W
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  The correct answer is A .
• Question 507: Equal masses of copper and rubber are raised to the same temperature. After sometimes, the copper was observed to be at a lower temperature because Options:
  A) the specific heat capacity of copper is lower than that of rubber
  B) copper expands more than rubber
  C) the specific heat capacity of rubber is lower than that of copper
  D) rubber expands more than copper
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  The correct answer is A .
• Question 508: A rectangular tank contains water to a depth of 2m, if the base is 4m x 3m, calculate the force on the base (Density of water = 10³kgm^-3, g = 10ms^-2) Options:
  A) 1.4 x 10²N
  B) 24 x 10⁴N
  C) 2.0 x 10⁴N
  D) 1.7 x 10³N
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  The correct answer is B .
• Question 509: A man standing between two parallel mirrors in a barber's shop will see the following number of his own image Options:
  A) eight
  B) two
  C) four
  D) one
  E) infinite
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  The correct answer is E .
• Question 510: The pressure of a given mass of a gas changes from 200Nm^-2 to 120Nm^-2 while the temperature drops from 127°C to -73°C. The ratio of the final volume to the initial volume is Options:
  A) 2 : 5
  B) 5 : 4
  C) 5 : 2
  D) 4 : 5
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  The correct answer is B .