List of top Physics Questions

The relative permeability (\( \mu_r \)) of ferromagnetic substance is
In series circuit with resistors \( R_1, R_2, R_3 \), the current flowing through each resistor is
The unit of current density is
The direction of magnetic field inside a current carrying solenoid is
A capacitor of 100 \(\mu F\) is charged to 100 volt. The energy stored in it will be
Which of the following has unit volt-metre\(^{-1}\)?
The relation between drift velocity \( v \) of free electrons in conductor and potential difference \( V \) between ends of conductor is
With the rise in temperature, the resistance of semiconductor
Power of electric circuit is
Which one of the following frequency ranges is used for TV transmission?
X-rays are
What is the main difference between isotopes of the same element?
Which series of hydrogen spectrum lies in visible portion?
Which of the following is chargeless particle?
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)
Which one of the following is not a type of radioactive decay?
Boolean expression of NAND gate is
Which logic gate's output is true only if the inputs are different?
What type of wave is used in fibre optic communication?
In n-type semiconductor the minority charge carrier is/are
When boron is mixed as impurity in silicon, then resultant matter is
Reverse biased diode is
A person uses spectacles (lens) of +2D power. His defect of vision is.
The bubble of soap appears coloured due to
Which of the following is used to reduce chromatic aberration in lenses?