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.
heat capacity of ice
specific heat capacity
specific latent heat of vaporisation of ice
specific latent heat of fusion of ice
Correct answer is D
No explanation has been provided for this answer.
120s
570s
600s
836s
Correct answer is B
t = \(\frac{mc\theta}{IV} = \frac{3 \times 4189 \times 60}{6 \times 120} = 570s\)
The silvered surface in a vacuum flask reduces heat loos due to
conduction
convection
radiation
evaporation
Correct answer is C
No explanation has been provided for this answer.
The sagging of overhead electrical cables is the consequence of
linear expansivity
superficial expansivity
cubic expansivity
conductivity
Correct answer is A
No explanation has been provided for this answer.
300N
200N
140N
120N
Correct answer is D
M.A = \(\frac{E \times V.R}{100} = \frac{40 \times 6}{100} = \frac{12}{5}\)
W = M.A x effort
= \(\frac{12}{5} \times 50 = 120N\)