List of top Physics Questions asked in Bihar Board Class XII

The self-inductance of a solenoid depends on

Which of the following devices is based on the principle of electromagnetic induction?

What do you mean by power of accommodation of eye?

In series circuit with resistors \( R_1, R_2, R_3 \), the current flowing through each resistor is

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

The direction of magnetic field inside a current carrying solenoid is

The unit of current density is

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

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

The graph between voltage \( V \) of a conductor and current \( I \) is a straight line, which makes an angle \( \theta \) with the y-axis (which represents \( I \)). The resistance of the conductor will be

Which of the following has unit volt-metre\(^{-1}\)?

Power of electric circuit is

Equivalent energy of 1 amu 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

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

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

Which one of the following is not a type of radioactive decay?

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

Which of the following is chargeless particle?

X-rays are

Which series of hydrogen spectrum lies in visible portion?

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)

Reverse biased diode is

When boron is mixed as impurity in silicon, then resultant matter is