Post Utme Physics Past Questions and Answers

Question 741:

what must be the distance between an object and a converging lens of focal length 20cm to produce an erect image two times the object height?

A. 20cm
B. 15cm
C. 10 cm
D. 5cm

Question 742:

When light is incident on an object which is magenta in colour, which of the following colours would be absorbed?

A. Red and blue
B. Green only
C. Red and green
D. Red only

Question 743:

If it takes 5/0 hours to drains a container of 540.0m³ of water, what is the flow rate of water from the container in kgs^-3?
Density of water = 1000kgm^-3

A. 32.4
B. 31.5
C. 30.8
D. 30

Question 744:

A motor vehicle is brought to rest from a speed of 15ms^-2 in 20seconds.
Calculate the retardation.

A. 0.75ms^-2
B. 1.33 ms^-2
C. 5.00 ms^-2
D. 7.50 ms²

Question 745:

Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity?

A. The energy is constant but the linear momentum varies
B. The linear momentum is constant but the energy varies
C. Both energy and linear momentum are constant
D. The speed and the linear velocity are both constant