Jamb Physics 2018 Past Questions and Answers

Question 11:

• JAMB 2018

The diagram shown represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40, then the value of W is?

A. 28.0
B. 48.0N
C. 233.0N
D. 50.0N

Question 12:

• JAMB 2018

What type of reaction is represented by the following scheme?
\(_{1} ^{2} X\) + \(_{1} ^{2} Y\) -----> \(_{2} ^{3} Z\) + \(_{1} ^{0} n\) + energy

A. Fusion reaction
B. Fission reaction
C. Chain reaction
D. Radioactive decay

Question 13:

• JAMB 2018

The amount of heat needed to raise the temperature of 10kg of Copper by 1K is its

A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Internal energy

Question 14:

• JAMB 2018

The electrochemical equivalent of silver is 0.0012g/C. If 36.0g of silver is to be deposited by electrolysis on a surface by passing a steady current for 5mins, the current must be?

A. 6000A
B. 100A
C. 10A
D. 1A

Question 15:

• JAMB 2018

Shadows and eclipses result from the

A. Refraction of light
B. Reflection of light
C. Defraction of light
D. Rectilinear propagation of light