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.
An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is?
9 A
8 A
6 A
7 A
Correct answer is B
For the device rated 2000 W, 250 V, implies that current I, flowing is given by the relation
Power = IV
I = (power)/v = (200)/250
= 8A.
∴ the most suitable fuse for the device is 8A
Satellite communication network makes use of?
visible light
sound wave
radio wave
infra-red wave
Correct answer is C
No explanation has been provided for this answer.
of the even expansion of glass
glass is a crystal
glass is a good conductor of heat
of the uneven expansion of gass
Correct answer is D
No explanation has been provided for this answer.
II , III and IV only
I ,II and IV only
I , III and IV only
I , II and III only
Correct answer is B
No explanation has been provided for this answer.
The process whereby a liquid turns spontaneously into vapour is called?
regelation
sublimation
boiling
evaporation
Correct answer is D
No explanation has been provided for this answer.