Which of the following pairs is NOT part of the electromagnetic spectrum?
i. Radio waves.
ii. Beta rays.
iii. Gamma rays.
iv. Alpha rays
i and ii
iii and iv
i and ii
ii and iv
Correct answer is D
No explanation has been provided for this answer.
Dispersion of light by a glass prism is due to the
different colours of the glass
different speeds of the various colours in glass
defects in the glass
high density of glass
Correct answer is B
No explanation has been provided for this answer.
When a yellow card is observed through a blue glass, the card would appear.
black
green
red
white
Correct answer is A
No explanation has been provided for this answer.