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Wednesday, 28 October 2026
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Physics Past Questions and Answers

Jamb 1978 Physics Questions

Question 41:
A string is sustaining a stationary wave when
  • A The frequency of the wave is not proportional to the wavelength of the wave
  • B The amplitude of vibration is always zero
  • C Two equal waves are travelling in opposite directions
  • D The waves are longitudinal
  • E The frequency is directly proportional to the length of the string
View Answer & Explanation
Question 42:
For the correction of myopic defects in the human eye we require
  • A A convex lens
  • B A concave lens
  • C A combination of concave and convex lenses
  • D A prism
  • E A concave mirror
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Question 43:
Of the following which is different from the other?
  • A X-rays
  • B Gamma-rays
  • C Cathode rays
  • D Ultra violet rays
  • E Infrared rays
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Question 44:
The net charge on the atom is zero because
  • A The electrons and the protons that are charged are in the nucleus
  • B The total charge on the electrons is equal to the total charge on the protons
  • C The neutrons from a shield around the charged protons
  • D The number of electrons in an atom is half the number of protons
  • E A and B above
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Question 45:
The amount of heat required to raise the temperature of a body is
  • A Thermal energy
  • B Thermal conduction
  • C Heat loss
  • D Specific heat capacity
  • E Thermal capacity
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