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.
blue orange and red
red, blue and orange
blue, red and orange
red, orange and blue
orange, blue and red
Correct answer is A
Upon passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet.
Which of the following is used for controlling the amount of light entering the eye?
Cornea
Pupil
Iris
Optic nerve
Ciliary muscle
Correct answer is C
No explanation has been provided for this answer.
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