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 571: The area under a force-distance graph represents
Options:
A) acceleration
B) velocity
C) power
D) work
E) momentum
Show Answer
The correct answer is D .
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Question 572:
Zener diode is used for?
Options:
A) current amplification
B) power amplification
C) voltage regulation
D) energy conversion
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The correct answer is C .
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Question 573: The net charge on the atom is zero because
Options:
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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The correct answer is B .
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Question 574: When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is
Options:
A) 2 A
B) 3 A
C) 4 A
D) 5 A
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The correct answer is C .
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Question 575: In the microscope, the eyepiece lens merely acts as?
Options:
A) an inverter
B) a refiner
C) a diminisher
D) a magnifier
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The correct answer is D .
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Question 576: If the total force acting on a particle is zero, the linear momentum will
Options:
A) Increase
B) Decrease
C) Be Constant
D) Increase then decrease
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The correct answer is C .
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Question 577: A magnetic field is said to exist at a point if a force is
Options:
A) exerted on a stationary charge at the point
B) exerted on a moving charge at the point
C) deflected at the point
D) strengthened at the point
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The correct answer is B .
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Question 578: What is the speed of a body vibrating at 50 cyclic per second
Options:
A) 100 πrads
B) 200 πrads
C) 50 πrads
D) 400 πrads
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The correct answer is A .
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Question 579:
When the temperature of a liquid increases,its surface tension
Options:
A) decreases
B) increases
C) remains constant
D) increases then decreases
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The correct answer is A .
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Question 580: Calculate the length which corresponds to a temperature of 20oC if the ice and steam points of an unguarded thermometer are 400 mm apart
Options:
A) 20mm
B) 30mm
C) 60mm
D) 80mm
Show Answer
The correct answer is D .