Post Utme Physics Past Questions and Answers

Question 1036:

Which of the following has the shortest wavelength?

A. Infrared ray
B. Gamma rays
C. Ultra violet ray
D. Radio wave
E. Visible light

Question 1037:

The inability of the eye to focus near objects is known as ____________

A. Long sight
B. Astigmatism
C. Presbyopia
D. Glaucoma
E. Short sight

Question 1038:

A ball is projected horizontally from the top of a hill with a velocity of \(20 ms ^{-1}\).
If it reaches the ground 4 seconds later, what is the height of the hill? \(( g =10 ms )\).

A. \(20 m\)
B. \(40 m\)
C. \(80 m \)
D. \(160 m\)
E. 200 m\)

Question 1039:

Calculate the resistance of the filament of a lamp rated \(240 V 40 W\).

A. 2400
B. 36000
C. 7200
D. 14400
E. 28800

Question 1040:

A cube made of a metal of linear expansivity \(\alpha\) is warmed through a temperature of \(t\). if the initial 'volume of the cube is \(V\), what is the increase in volume of the cube?

A. \(\alpha Vt / 3\)
B. \(\alpha V t / 2\)
C. \(\alpha\) Vt\)A
D. \(2 aV t\)
E. \(3 \alpha Vt\)