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4701

If an object just begins to slide on a surface inclined at 30º to the horizontal,the coefficient of friction is?

  • A. √3
  • B. \(\frac{√3}{2}\)
  • C. \(\frac{1}{√2}\)
  • D. \(\frac{1}{√3}\)
View Answer & Discuss (2) JAMB 2022
4702

Which of the following thermometers measures temperature from the thermal radiation emitted by objects?

  • A. Thermocouple thermometer
  • B. Platinum resistance thermometer
  • C. Pyrometer thermometer
  • D. Constant pressure gas thermometer
View Answer & Discuss JAMB 2023
4703

The number of holes in an intrinsic semiconductor

  • A. is equal to the number of free electrons
  • B. is less than the number of free electrons
  • C. is not equal to the number of free electrons
  • D. is greater than the number of free electrons
View Answer & Discuss JAMB 2023
Download WAEC Nov/Dec App - Get all past questions and answers, 100% offline
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4704

The property of wave shown in the diagram above is?
 

  • A. Diffraction
  • B. Refraction
  • C. Polarisation
  • D. Interference
View Answer & Discuss JAMB 2023
4705

Which of the following statements regarding the application of electrical conduction via gases is/are correct?
Electrical conduction in gas is applied in:
(i) The identification of gases
(ii) Lighting/fluorescent tubes
(iii) Photocells
(iv) Cathode ray oscilloscope/T.V. tubes

 

  • A. (i), (iii) and (iv) only
  • B. (i), (ii) and (iv) only
  • C. (ii), (iii) and (iv) only
  • D. (i), (ii) and (iii) only
View Answer & Discuss JAMB 2023
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