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.
2.5 KW
80 KW
25 KW
50 KW
Correct answer is D
where force = f, mass = m, acceleration = a, velocity = v, time = t
Force = m * a → m * \frac{Δv}{t}
Power = f * v
P = m * \frac{v}{t} * v = m * \frac{v^2}{t}
p = \frac{1600 * 25^2}{20}
p = 50,000 or 50 KW
7.06 x 10^{3}J
5.38 x 10^{3}J
6.72 x 10^{3}J
1.35 x 10^{3}J
Correct answer is C
quantity of heat = mass * Specific latent heat → 20 * 336
quantity of heat = 6720j or 6.72 x 10^{3}J
The graph of pressure (P) against the reciprocal of the volume (I/V) in Boyles's law is a?
hyperbola
parabola
curve
straight line
Correct answer is D
The graph of pressure (P) against the reciprocal of the volume (I/V) is a straight line passing through the origin.
Which expression gives magnetic flux?
qVB sin\theta
\frac{\mu \phi I}{2 \pi r}
BA cos \theta
-N \frac{d \phi}{dt}
Correct answer is C
the magnetic flux through a surface is the surface integral of the normal component of the magnetic field B over that surface.
It is usually denoted Φ or ΦB. The SI unit of magnetic flux is the weber
Mathematically it is represented as B = Φ/A
where B is magnetic flux density in teslas (T),
Φ is magnetic flux in webers (Wb), and
A is area in square meters (m2).
specific latent heat of fusion of ice
specific heat capacity of ice
heat capacity of ice
specific heat of vaporization of ice
Correct answer is A
Specific latent heat of fusion of a substance is the quantity of heat required to convert the unit mass of the substance from the solid to the liquid state without change in temperature.