Jamb Physics 2018 Past Questions and Answers

Question 51:

• JAMB 2018

An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

B. \(\frac{1}{2}\)
C. 1
D. 2

Question 52:

• JAMB 2018

The energy needed to move a unit positive charge around a complete electric circuit is called the

A. Electromotive force
B. Electric potential difference
C. Electric energy
D. Kinetic energy

Question 53:

• JAMB 2018

A force of 5N acts at a point Y on a rod XYZ as shown in this diagram. If XYZ is 2m, what is the moment of the force about point X?

A. 0Nm
B. 3Nm
C. 7Nm
D. 10Nm

Question 54:

• JAMB 2018

The resistance of a 40W car head lamp, drawing current from a 12V battery is ____.

A. 0.3Ω
B. 3.3Ω
C. 3.6Ω
D. 4.8Ω

Question 55:

• JAMB 2018

A beam of light is incident from air to water at an angle of 300. Find the angle of refraction if the refractive index of water is 4/3

A. 15\(^o\)
B. 18\(^o\)
C. 22\(^o\)
D. 24\(^o\)