List of top Physics Questions

Which of the following represents resistance, R?
\( \rho = \text{resistivity}, l = \text{length of material}, A = \text{cross-sectional area} \)

The direction of magnetic field inside a current carrying solenoid 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

If the length of a conductor is doubled while keeping the potential difference across it constant, then the drift velocity of electron will

The relative permeability (\( \mu_r \)) of ferromagnetic substance is

A capacitor of 100 \(\mu F\) is charged to 100 volt. The energy stored in it will be

Power of electric circuit is

With the rise in temperature, the resistance of semiconductor

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\(^{-1}\)?

Which series of hydrogen spectrum lies in visible portion?

What is the main difference between isotopes of the same element?

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?

Which of the following is chargeless particle?

X-rays are

Which one of the following frequency ranges is used for TV transmission?

What type of wave is used in fibre optic communication?

Boolean expression of NAND gate is

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

Which logic gate's output is true only if the inputs are different?

Which of the following cannot be polarized?