List of top Physics Questions asked in Bihar Board XII

The equivalent of decimal number 27 in binary number system will be:
In a full wave rectifier, if input frequency is 50 Hz, then output frequency will be:
The S.I. unit of decay constant is:
Instrument used to increase input voltage/current is called:
Width of forbidden energy gap in the semiconductor is approximately:
Number of neutrons in an atom of \(^{230}_{90}\mathrm{Th}\) is:
The half-life of a radioactive substance is:
If in a logic gate output \(Y\) is obtained by the product of its both inputs \(A \cdot B\), then the gate is:
P-N junction diode is used as:
Cathode rays are group of:
The de Broglie wavelength is:
Photocell is based on:
The colour of the sky is blue due to:
The fringe width in interference of light due to two coherent sources is:
Two sources of monochromatic light are coherent when their:
Convex lens is used in:
A large virtual image of an object is formed by:
The wavelength of which colour is minimum?
Powers of two lenses kept in contact are \( P_1 \) and \( P_2 \). The power of the equivalent lens will be:
The image formed in a compound microscope is:
The image of any object formed at the retina of the human eye is:
Which causes the formation of rainbow?
If the phase difference between alternating current and e.m.f is \(\phi\), then the value of power factor is:
In an AC circuit, power is lost in only:
An alternating electric current is represented by the equation \( i = 0.6 \sin 100 \pi t \). The frequency of the alternating current is: