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.
Which of the following obeys Ohm's law?
all metals
diode only
all electrolytes
glass
Correct answer is A
No explanation has been provided for this answer.
Shadows and eclipses result from the
refraction of light
reflection of light
defraction of light
rectilinear propagation of light
Correct answer is D
No explanation has been provided for this answer.
6000A
100A
10A
1A
Correct answer is B
Given Data: Mass of Ag = 36.0g,
Z which is electrochemical equivalent of Ag = 0.0012coulomb
t = 5mins → 5 * 60 = 300secs.
Using M =Z * I * t
make I the subject of the formula
I = \(\frac{M}{Z * t}\) → \(\frac{36}{0.0012 * 300}\)
Current (I) = 100A
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.