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Wednesday, 15 April 2026
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Physics Past Questions and Answers

Topic: Description of sources and uses of various types of radiation

Jamb Physics Questions - Description of sources and uses of various types of radiation

Question 1:
The range of wavelengths of the visible spectrum is 400nm - 700nm. The wavelength of gamma rays is
  • A Longer than 700nm
  • B Shorter than 700nm but longer then 400nm
  • C 550nm
  • D Shorter than 400nm
  • E Infinite
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Question 2:
Which of the following statement is TRUE of ultraviolet, visible and infra-red rays?
  • A They are all electromagnetic waves with the same wavelength
  • B Ultra-violet rays have shorter wavelengths than infra-red rays and produce flourescence
  • C Infrared rays have shorter wavelength than visible light and produce the sensation of heat
  • D The wavelenghts increase in the sequence: visible, ultra-violet, infra-red
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Question 3:
Gamma rays are produced when
  • A High velocity electrons are abruptly stopped in metals
  • B Energy changes occur within the nucleus of atoms
  • C Energy changes occur within the electronic structure of atoms
  • D Electrons are deflected in very strong magnetic fields
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Question 4:
Flourescent tubes produces light by the
  • A Excitation of gas molecules
  • B Conduction of solar energy
  • C Refraction of light by gas molecules
  • D Thermal agitation of electron in the tubes
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Question 5:
Gamma rays are produced when
  • A High velocity electrons are abruptly stopped in metals
  • B Energy changes occur within the nucleus of atoms
  • C Energy changes occur within the electronic structure of atoms
  • D Electrons are deflected in very strong magnetic fields
View Answer & Explanation