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Wednesday, 20 May 2026
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Physics Past Questions and Answers

Jamb 1986 Physics Questions

Question 41:
if the fig above E is an accumulator with negligible internal resistance. and the EMF 9.0V, The the total current is
  • A 0.3A
  • B 0.8A
  • C 1.0A
  • D 1.8A
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Question 42:
In fig 6, a ray of light in air strikes a glass plate at an angle of incidence 60 degrees, the reflected ray is observed to be perpendicular to the refracted ray, what is the refractive index of the glass
  • A 1.73
  • B 1.50
  • C 0.87
  • D 0.57
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Question 43:
In an experiment in which molten naphthalene is allowed to cool, the cooling curve in fig 5 was obtained, the temperature \( 80^{\circ}C \) is known as
  • A Cooling temperature
  • B Boiling point
  • C Melting point
  • D Vaporization point
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Question 44:
fig 4 represents a block-and-tackle pulley system on which an effort of W newtons supports a load of 120.0N if the efficiency of the system is 40% then the value of W is
  • A 28.0N
  • B 48.0N
  • C 50.0N
  • D 288.0N
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Question 45:
In fig 3, three forces F1, F2, and F3 acting at O are in equilibrium. If the magnitude of F1 is 10N,and the magnitude of F2 is 5N, find the magnitude of F3
  • A 26.4N
  • B 15.0N
  • C 13.2N
  • D 10.0N
View Answer & Explanation