Jamb Physics 2023 Past Questions and Answers

Question 56:

• JAMB 2023

A simple pendulum, has a period of 5.77 seconds. When the pendulum is shortened by 3 m, the period is 4.60 seconds. Calculate the new length of the pendulum

A. 5.23 m
B. 6.42 m
C. 4.87 m
D. 7.26 m

Question 57:

• JAMB 2023

Three forces with magnitudes 16 N, 12 N and 21 N are shown in the diagram below. Determine the magnitude of their resultant force and angle with the x-axis

A. 7.63N,61°
B. 8.71N,61°
C. 7.63N,29°
D. 8.71N,29°

Question 58:

• JAMB 2023

A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 \(ms-1\)

Calculate the wave number of the wave.

A. 3
B. 4
C. 5
D. 2

Question 59:

• JAMB 2023

The near point of a patient's eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away?

A. 2 diopters
B. 2.5 diopters
C. 0.5 diopters
D. 3 diopters

Question 60:

• JAMB 2023

Which of the following is/are not true about the heat capacity of a substance?
(i) It is an intensive property
(ii) Its S.I unit is \(jK-1\)
(iii) It is an extensive property
(iv) Its S.I unit is \(jkg-1\)

A. (i) and (iii) only
B. (i), (ii) and (iv) only
C. (i) and (iv) only
D. (ii) and (iii) only