340.0ms-1
33Oms-1
170ms-1
85.0ms-1
42.5ms-1
Correct answer is A
L = λ/4; λ= 4 = 4m
v = fλ = 85 x 4 = 340ms-1
I and II only
I and III only
II and III only
II and IV only
III and IV only
Correct answer is D
No explanation has been provided for this answer.
Which of the following radiations have the highest frequency?
Radio waves
Light waves
X-rays
infra-red rays
Ultraviolet rays
Correct answer is C
No explanation has been provided for this answer.
2.0 x 103Hz
1.0 x 103Hz
4.0 x 10-2Hz
1.0 x 10-3Hz
5.0 x 104Hz.
Correct answer is B
The waveform moved from A to B in \(2.5 \times 10^{-3}\) seconds.
From the diagram, A to B has \(2\frac{1}{2}\) complete oscillations between it, Therefore, the period of the oscillation is
\(\frac{2.5 \times 10^{-3}}{2.5} = 1 \times 10^{-3} s\)
\(Frequency = \frac{1}{Period}\)
= \(\frac{1}{1 \times 10^{-3}} = 1 \times 10^{3} Hz\)
refraction
reflection
diffraction
polarization
Correct answer is A
No explanation has been provided for this answer.
WAEC Subjects
Aptitude Tests