Post Utme Physics Past Questions and Answers

Question 71:

Which of the following statements is true about electromagnetic waves?

A. They are longitudinal
B. They can be seen
C. They have the same frequency in vacuum
D. They travel at the same speed in a vacuum

Question 72:

Which one of the following statements concerning electromagnetic waves is false?

A. Electromagnetic waves are longitudinal waves.
B. Electromagnetic waves transfer energy through space.
C. The existence of electromagnetic waves was predicted by Maxwell.
D. Electromagnetic waves can propagate through a material substance.

Question 73:

Which one of the following statements concerning waves is false?

A. A wave can have both transverse and longitudinal components.
B. A wave carries energy from one place to another.
C. A wave does not result in the bulk flow of the material of its medium.
D. A transverse wave is one in which the disturbance is parallel to the direction of travel.

Question 74:

A light sensitive area at the back of the eye where images are formed is called ____________

A. Yellow Spot
B. Iris
C. Ciliary Muscle
D. Retina

Question 75:

A luminous object is placed at a given distance from a converging lens of focal length \(12 \mathrm{~cm}\) and a real image is produced.
Find the image distance if it is equal to the object distance.

A. \(6 \mathrm{~cm}\)
B. \(3 \mathrm{~cm}\)
C. \(12 \mathrm{~cm}\)
D. \(24 \mathrm{~cm}\)