Physics 2018 Waec Past Questions and Answers

Question 51 :

• WAEC 2018

In which of the following fields is radioisotopes not used?

A. Medicine
B. Oil industry
C. Agriculture
D. Weather forecast

Question 52 :

• WAEC 2018

A nuclide is represented by \(_{32}^{70}B\). Determine its neutron-proton ratio

A. 0.5
B. 0.8
C. 1.2
D. 1.5

Question 53 :

• WAEC 2018

(a) Define strain.
(b) A rubber band is stretched to twice its original length. Calculate the strain on the rubber band.

Question 54 :

• WAEC 2018

State three materials used for making optical fibres.

Question 55 :

• WAEC 2018

Name three classes of magnetic materials.