Jamb Physics 2020 Past Questions and Answers

Question 36:

• JAMB 2020

In which of the following diagrams is the length of the tube equal to one wavelength?

A. A
B. B
C. C
D. D

Question 37:

• JAMB 2020

Which of the following pairs is part of the electromagnetic spectrum?
I. Radio waves
II. sound waves
III. Gamma rays
IV. water waves

A. I and II
B. III and IV
C. I and III
D. II and IV

Question 38:

• JAMB 2020

A substance has half of 3 min. After 6 min, the count rate was observed to be 400. What was its count rate at zero time?

A. 1600
B. 1200
C. 200
D. 2400