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 2031: A sonometer wire of length 100cm under a tension of 10N, has a frequency of 250Hz. Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 350Hz. The new tension is Options:
  A) 5.1N
  B) 7.1N
  C) 14.0N
  D) 19.6N
  Show Answer
  The correct answer is D .
• Question 2032:

  

  The figure above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y

  Options:
  A) 12Hz
  B) 19Hz
  C) 60Hz
  D) 75Hz
  Show Answer
  The correct answer is D .
• Question 2033: What is the acceleration due to gravity 'g' on the moon, if g is 10^-2 on the earth? Options:
  A) 0. 10 ms^-2
  B) 0.74ms^-2
  C) 1.6ms^-2
  D) 10.00ms^-2
  Show Answer
  The correct answer is C .
• Question 2034: A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule? Options:
  A) 95cm
  B) 25cm
  C) 20cm
  D) 5cm
  Show Answer
  The correct answer is B .
• Question 2035:

  A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 $ms-1$

  Calculate the wave number of the wave.

  Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is C .
• Question 2036:

  A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that

  Options:
  A) white light Is an electromagnetic wave
  B) the prism has all the colours of the white light
  C) different colours of white light travel with different speeds in glass
  D) white light has undergone total Internal reflection in the prism
  Show Answer
  The correct answer is C .
• Question 2037: 4g of a radioactive material of half-life 10 days is spilled on a laboratory floor. How long would it take to disintegrate 3.5g of the material? Options:
  A) 1$\frac{1}{4}$ days
  B) 8$\frac{1}{4}$ days
  C) 30 days
  D) 80 days
  Show Answer
  The correct answer is C .
• Question 2038: A reservoir 500 m deep is filled with a fluid of density 850 kgm^-3. If the atmospheric pressure is 1.05 x 10⁵ Nm^-2, the pressure at the bottom of the reservoir is.
  [g = 10ms^-2] Options:
  A) 4.72 x 10⁶ Nm^-2
  B) 4.36 x 10⁶ Nm^-2
  C) 4.28 x 10⁶ Nm^-2
  D) 4.25 x 10⁶ Nm^-2
  Show Answer
  The correct answer is D .
• Question 2039: A temperature scale has a lower fixed point of 40mm and a upper fixed point of 200mm. What is the reading on this scale when a thermometer reads 60^oC? Options:
  A) 33.3mm
  B) 36.0mm
  C) 96.0mm
  D) 136.0mm
  Show Answer
  The correct answer is D .
• Question 2040: The wavelength of the first overtone of a note in a closed pipe of length 33 cm is? Options:
  A) 33 cm
  B) 44 cm
  C) 22 cm
  D) 17 cm
  Show Answer
  The correct answer is B .