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.
A ray incident on a glass prism undergoes minimum deviation when the
incident angle is equal to the angle of refraction
refraction angle equals 90o
incident angle equals 90o
incident angle is equal to the angle of emergence
Correct answer is D
At minimum deviation, it is observed that light passes symmetrically through, the prism such that the angle of incidence (io) is angle to the angle of emergency (eo).(i/e Io = eo)
The most suitable cell used for short interval switches in electric bells is a
lead- acid accumulator
Daniel cell
Leclanche cell
nickel iron accumulator
Correct answer is C
No explanation has been provided for this answer.
Which of the following pairs of light rays show the widest separation in the spectrum of white light
Blue and red
Green and yellow
Indigo and violet
Orange and red
Correct answer is A
From the above diagram the widest separation is given by Blue and red
A magnetic field is said to exist at a point if a force is
exerted on a stationary charge at the point
exerted on a moving charge at the point
deflected at the point
strengthened at the point
Correct answer is B
A charge in motion always experienced a force on entering a magnetic field