Jamb Physics 2023 Past Questions and Answers

Question 51:

• JAMB 2023

A parallel plate capacitor separated by an air gap is made of $0.8m^2$ tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

A. 3.54nC
B. 42.5nC
C. 35.4nC
D. 4.25nC

Question 52:

• JAMB 2023

What is the amount of heat required to raise the temperature of a 0.02 kg of ice cube from $-{10}^{o}C$ to ${10}^{o}C$ ?

[specific latent heat of fusion of ice = 3.34 x ${10}^5$ $Jk{g}^{-}1$, Specific heat capacity of water = 4200 $Jk{g}^{-}1$ $k^{-}1$

Specific heat capacity of ice = 2100 $Jk{g}^{-}1$ $k^{-}1$

A. 6680 J
B. 1680 J
C. 7520 J
D. 7940 J

Question 53:

• JAMB 2023

Which of the following thermometers measures temperature from the thermal radiation emitted by objects?

A. Pyrometer thermometer
B. Platinum resistance thermometer
C. Thermocouple thermometer
D. Constant pressure gas thermometer

Question 54:

• JAMB 2023

A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?


A. 0.19
B. 0.24
C. 0.40
D. 0.22

Question 55:

• JAMB 2023

Light of wavelength 589 nm in vacuum passes through a piece of fused quartz of index of refraction n = 1.458. What is the frequency of the light in fused quartz?

[Speed of light c = $3.00\times {10}^{8}m{s}^{-1}$]

A. $5.09\times {10}^{15}$Hz
B. $5.09\times {10}^{14}$ Hz
C. $1.77\times {10}^{15}$ Hz
D. $1.77\times {10}^{14}$ Hz