Physics Questions and Answers
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.
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.
5 mins
30 mins
50 mins
60 mins
120 mins
Correct answer is A
0.0033g = 1 coulomb
1.98gs = 1.98 x 1
= 600 cou.
Q = It
600 = 2 x t
t = 300sec = 5 mins
white light is an electromagnetic wave
the prism has all the colours of the white light
white light has undergone total internal reflection in the prism
different colours of white light travel with different speeds in glass
white ligth consist of yellow, green and red colours
Correct answer is D
No explanation has been provided for this answer.
41.8o
44.1o
60.0o
83.6o
120.0o
Correct answer is D
\(\frac{4}{3}\) = \(\frac{sin r_1}{sin 30}\) and \(\frac{4}{3}\) = \(\frac{sin r_2}{sin 30}\)
r1 = 41.8o and r2 = 41.8o
angle between them = r1 + r2
= 83.6o
i and iii only
i and ii only
ii and iii only
i, ii, and iii only
i only
Correct answer is B
No explanation has been provided for this answer.
A 45o triangular glass prism can be used as a reflector of light because
A refraction never takes place in such a prism
the angle of reflection equals the angle of incidence
the refractive index of glass is less than 1
it is transparent
the critival angle angle for glass is less than 45o
Correct answer is E
No explanation has been provided for this answer.