Post Utme Physics Past Questions and Answers

Question 941:

a plane sound wave of frequency 85.SHz and velocity 342ms" is reflected from a vertical wall. At what distance from the wall does the wave have an antinode?

A. Im
B. Om
C. 2m
D. 3m

Question 942:

A ray of light strikes a plain mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what an angle is the reflected ray is rotated?

A. 45°
B. 20°
C. 70°
D. 25°

Question 943:

The driving mirror of a car has a radius of curvature of im. A vehicle behind the car is 4m from the mirror. Find the image distance behind the car

A. 8/7
B. 4/7
C. 4/9
D. 9/2

Question 944:

A bread toaster uses a current of 4A when plugged in a 240 volts line. If it takes one minute to toast slice of bread, What is the energy consumed by the toaster?

A. 3.60 x \(10^3\)J
B. 5.76 x \(10^4\)J
C. 1.60 x \(10^2\)J
D. 1.60 x \(10^4\)J

Question 945:

The diagram below shows two capacitors P and Q and capacitances 2pF and 4uF respectively connected to d . c source.

A. 1:2
B. 2:1
C. 4:1
D. 1:4