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.
The amount of heat needed to raise the temperature of 10kg of Copper by 1K is its
specific heat capacity
latent heat
heat capacity
internal energy
Correct answer is C
The heat capacity of a defined system is the amount of heat (usually expressed in calories, kilocalories, or joules) needed to raise the system's temperature by one degree (usually expressed in Celsius or Kelvin).
fusion reaction
fission reaction
Chain reaction
radioactive decay
Correct answer is A
No explanation has been provided for this answer.
28.0
48.0N
233.0N
50.0N
Correct answer is D
Given Data:
Efficiency = 40% Load = 120N, V.R = 6 (Number of Pulleys)
Efficiency = \(\frac{M.A}{V.R} * 100\)
40 = \(\frac{M.A}{6} * 100\)
6 * 40 = 100 M.A
M.A = \(\frac{240}{100}\) → 2.4
Where M.A = \(\frac{Load}{Effort}\)
2.4 = \(\frac{120}{Effort}\)
: Effort = \(\frac{120}{2.4}\) → 50N
white light Is an electromagnetic wave
the prism has all the colours of the white light
different colours of white light travel with different speeds in glass
white light has undergone total Internal reflection in the prism
Correct answer is C
No explanation has been provided for this answer.
heat ----> Light----> Sound ----> Kinetic
Kinetic ----> Light ----> Heat ----> Electricity
heat ----> Kinetic ----> Electricity ----> Heat and Light
electricity ----> Kinetic ----> Heat ----> Light
Correct answer is C
The steam engine uses the Heat supplied from steam to supply kinetic energy into the generator which converts it to electricity to light the lamp, the lamp gives out light and heat as it works