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.
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Question 171:
The value of T in the figure above is
Options:
A) 30N
B) 10.0N
C) 20N
D) 40N
Show Answer
The correct answer is D .
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Question 172: A semiconductor diode is used in rectifying alternating current into direct current mainly because it
Options:
A) allows current to flow in either direction
B) is non-linear
C) offers a high input resistance
D) allows current to flow only in one direction
Show Answer
The correct answer is D .
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Question 173: A body of mass 36kg falls through a viscous liquid which offers a drag force of 260N on the body. The upthrust on the body at terminal velocity is?
[g = 10ms2]
Options:
A) 100N
B) 620N
C) 50N
D) 310N
Show Answer
The correct answer is A .
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Question 174: In a compound microscope, the objective and the eye piece focal lengths are
Options:
A) At infinity
B) Long
C) Short
D) The same
Show Answer
The correct answer is C .
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Question 175: Three 3ω resistance are connected in parallel what is the equivalent resistance?
Options:
A) 1ω
B) 9ω
C) 3ω
D) 0.33ω
Show Answer
The correct answer is A .
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Question 176: If a beaker is filled with water it is observed that the surface of the water is not horizontal at the glass-water interface. This behavior is due to
Options:
A) friction
B) viscosity
C) surface tension
D) evaporation
Show Answer
The correct answer is C .
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Question 177: Which of the following has no effect on radiation?
Options:
A) nature of surface
B) density
C) surface area
D) temperature
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The correct answer is B .
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Question 178: A lamp is rated 240V, 60W. The resistance of the filament is
Options:
A) 960
B) 16
C) 15
D) 4
Show Answer
The correct answer is A .
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Question 179: For which of the underlisted quantities is the derived unit ML2T2 correct? i. momentum of a force ii. work iii. acceleration
Options:
A) i only
B) ii only
C) iii only
D) i and ii
E) ii and iii
Show Answer
The correct answer is D .
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Question 180: Which of the following statements is incorrect? The sensitivity of a galvanometer which incorporates an optical lever arrangement may be increased by providing
Options:
A) a larger number of turns in the coil
B) a thinner suspension with a small torsional control
C) a special alloy permanent magnet which gives a high magnetic flux
D) all of the above
E) a light source with a greater intensity
Show Answer
The correct answer is D .