List of top Physics Questions

The unit of current density is
In series circuit with resistors \( R_1, R_2, R_3 \), the current flowing through each resistor is
A capacitor of 100 \(\mu F\) is charged to 100 volt. The energy stored in it will be
Power of electric circuit is
The relation between drift velocity \( v \) of free electrons in conductor and potential difference \( V \) between ends of conductor is
Which of the following has unit volt-metre\(^{-1}\)?
With the rise in temperature, the resistance of semiconductor
What is the energy of a photon with a wavelength of 500 nm?
(Use \( c = 3 \times 10^8 \) m/s and \( h = 6.626 \times 10^{-34} \) Js)
What is the main difference between isotopes of the same element?
Which one of the following frequency ranges is used for TV transmission?
X-rays are
Which one of the following is not a type of radioactive decay?
Which of the following is chargeless particle?
Which series of hydrogen spectrum lies in visible portion?
Which logic gate's output is true only if the inputs are different?
Boolean expression of NAND gate is
What type of wave is used in fibre optic communication?
Reverse biased diode is
In n-type semiconductor the minority charge carrier is/are
When boron is mixed as impurity in silicon, then resultant matter is
If two converging lenses of equal focal length \(f\) are kept in contact, then the focal length of the combination will be
Which of the following cannot be polarized?
The bubble of soap appears coloured due to
A person uses spectacles (lens) of +2D power. His defect of vision is.
Power of a convex lens is 2 dioptre. Its focal length will be