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.
What is the density of a fuel of relative density 0.72? [Density of water = 1000kg m-3]
72 kgm-3
720 kgm-3
7200 kgm-3
72000 kgm-3
Correct answer is B
P = 0.72 x 1000 = 720
Which of the following instruments is best for measuring the diameter of a thin constantan wire?
callipers
metre rule
micometer screw guage
vernier callipers
Correct answer is C
No explanation has been provided for this answer.
sensity
volume
specific heat capacity
electrical resistance
Correct answer is B
No explanation has been provided for this answer.
9.0 x 10-24m
4.55 x 10-17m
7.25 x 10-11m
6.20 x 10-8m
Correct answer is C
\(\lambda = \frac{hc}{\frac{1}{2}mv^2}\)
= \(\frac{6.6 x 10^{-34} \times 3 \times 10^8}{0.5 \times 9.1 \times 10^{-3} (10^7)^2}\)
= 7.25 x 10-11m
The main difference between between x-rays and \(\gamma-rays\) lies in their
ionizing ability
absorption rate
mode of production
mode of propagation
Correct answer is D
No explanation has been provided for this answer.