Processing math: 100%

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

HOT! Click here to get our updates directly on your WhatsApp

2,911.

If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

32.5kg^-1 s

31.5kg^-1

30.8kg^-1 s

30.0kg^-1 s

View answer & explanation

Correct answer is D

Flow = rate = $\frac{mass}{time}$

= $\frac{1000 \times 540}{5 \times 3600}$

= 30.0kg^-1 s

2,912.

A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is

0.4eV

2.5eV

3.0eV

7.0eV

View answer & explanation

Correct answer is C

Work function = 5 - 2

= 3eV

2,913.

The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be

24V

48V

View answer & explanation

Correct answer is A

$\frac{V_s}{V_p}$ = $\frac{N_s}{N_p}$ = $\frac{I_p}{I_s}$

$\frac{100}{400}$ = $\frac{V_S}{12}$

V = 3V

2,914.

Which of the following is required to convert a milliammeter to an ammeter?

A high resistance in parallel

A high resistance in series

A low resistance in parallel

A low resistance in series

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

2,915.

If the maximum voltage across a 100ohms resistor is 20V, then the maximum power it can dissipate is

5.00W

4.00W

2.00W

25W

View answer & explanation

Correct answer is B

P = $\frac{V^2}{R}$

= $\frac{20 \times 20}{100}$

= 4W

Sub-categories

JAMB

Aptitude Tests

Spatial Reasoning Questions and Answers

Data Interpretation Questions and Answers

Puzzles Questions and Answers

Quantitative Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Typing Speed and Accuracy Test

Verbal Reasoning Questions and Answers

Situational Judgement Questions and Answers

Nigeria General Knowledge Questions and Answers

Logical Reasoning Questions and Answers

Microsoft Office Questions and Answers

Abstract Reasoning Questions and Answers

Personality Test

See all →

Interview Questions & Answers

View latest jobs in Nigeria today