If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
1
2
3
4
Correct answer is C
No explanation has been provided for this answer.
yellow
red
black
blue
Correct answer is C
No explanation has been provided for this answer.
In the fig above, what is the angle of reflection of the ray of light at mirror M?
\( 90^{\circ} \)
\( 60^{\circ} \)
\( 45^{\circ} \)
\( 30^{\circ} \)
Correct answer is B
No explanation has been provided for this answer.
The fig above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y
12Hz
19Hz
60Hz
75Hz
Correct answer is D
No explanation has been provided for this answer.
\( 25^{\circ} \)
\( 40^{\circ} \)
\( 15^{\circ} \)
\( 55^{\circ} \)
\( 95^{\circ} \)
Correct answer is E
incident ray = XY
incidence angle i = 15\( ^{\circ} \)
rotation angle θ = 40º
angle that the reflected ray make with AY = i + 2θ
= 15 + [2 * 40] = 15 + 80 = 95º