Loading [MathJax]/jax/output/HTML-CSS/jax.js

JAMB Physics Past Questions & Answers - Page 310

1,546.

The volume of an air bubble increases from the bottom to the top of a lake at constant temperature because

atmospheric pressure acts on the surface of the lake

pressure increases with depth

density remains constant with pressure

the bubble experiences an upthrust

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

1,547.

A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. A force of 500N is exerted by the plunger. Find the force exerted on the piston

8000N

4000N

2000N

31N

View answer & explanation

Correct answer is A

Pressure on piston = pressure on the plunger

$\frac{500}{\pi\ \times\ 0.2 \times\ 0.2}$ = $\frac{F}{\pi\ \times\ 0.8 \times\ 0.8}$

F = 8000N

1,548.

The energy contained in a wire when it extended by 0.02m by a force 500 N is

10J

10³J

10⁴

View answer & explanation

Correct answer is A

Energy = $\frac{1}{2}$ Fe

= $\frac{1}{2}$ x 500 x 0.02

E = 5J

1,549.

Which of the following statements are TRUE about frictional force?

i. it is always a disadvantage
ii. it is sometimes a disadvantage
iii. it always exist where there is a relative motion of two bodies that are in contact
iv. it is sometimes very useful

i, iii only

i, iv only

ii, iii only

iii, iv only

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

1,550.

A vehicle of mass m is driven by an engine of power P from rest. Find the minimum time it will take to acquire a speed

$\frac{mv^2}{t}$

$\frac{mv^2}{2t}$

$\frac{mv}{t}$

$\frac{mv}{2t}$

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

JAMB Subjects

Literature in English

Islamic Religious Knowledge

Christian Religious Knowledge

Aptitude Tests

Personality Test

Quantitative Reasoning Questions and Answers

Data Interpretation Questions and Answers

Typing Speed and Accuracy Test

Abstract Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Situational Judgement Questions and Answers

Microsoft Office Questions and Answers

Spatial Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Verbal Reasoning Questions and Answers

Puzzles Questions and Answers

See all →

View latest jobs in Nigeria today