List of top Physics Questions

Which of the following relation is called as current density ?
What is the dielectric constant of a conductor?
A simple pendulum with a bob of mass m oscillates from A to C and back to A such B that PB is H. If the acceleration due to gravity is g, then the velocity of the bob as it passes through B is
It is possible to have a positively charged body at
Susceptibility is positive for
Curie temperature of iron is the temperature below which, it is
Convex lens of power 4D and a concave lens of power 3D are placed in contact. What is the equivalent power of the combination?
A diminished image of an object is to be obtained on a screen 1.0 m from it. This can be achieved by placing
Two coherent waves of intensities 7 and $ 4I $ are superimposed on each other. The intensity at the constructive interference will be:
Which of the following is a dimensionless quantity?
The tension in piano wire is $10 \,N$.What should be the tension in the wire to produce a note of double the frequency?
The reactance of an inductance of $0.01\, H$ to a $50 \,Hz$ A.C. is
The radius vector, drawn from the Sun to a planet sweeps out equal areas in equal lines. This is the statement of
The power factor varies between
If a $p-n$ diode is reverse biased, then the resistance measured by an ohm-meter, will be
The rainbow is seen sometimes in the sky when it is raining. When one sees a rainbow, one?? back is towards the Sun. Internal reflection from water droplet causes dispersion. The final ray is in the backward direction.
A normal human eye can clearly see all the objects beyond a certain minimum distance. The human eye has the capacity to suitably adjust the focal length of its lens to a certain extent.
An intrinsic semiconductor, at the absolute zero temperature, behaves like a/an
In the case of forward biasing of p-n junction, which one of the following figures correctly depicts the direction of flow of carriers?
The power factor varies between :
The motion of a rocket is based on the principle of conservation of
The logic circuit given in the figure performs the logic operation
A metal rod at a temperature of $150^{\circ} C$, radiates energy at a rate of $20\, W$. If its temperature is increased to $300^{\circ} C$, then it will radiate at the rate of
The velocity of photons is proportional to (where $\upsilon$ = frequency)
In the formula $X = 3Y\, Z^{2}, X$ and $Z$ have dimensions of capacitance and magnetic induction respectively. What are the dimensions of $Y$ in $MKSQ$ system?