List of top Physics Questions

The forbidden energy band gap in conductors, semi conductors and insulators are E_G1, E_G2 and E_G3, respectively. The relation among them is

Brief exposure to the sound of minimum can damage ear drums of humans.

An electric bulb has a filament made of _______

Homi Jahangir Bhabha played an important role in the Discovery of ________

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At what distance should an object be placed from a convex lens of focal length 15 cm to obtain a real image three times the size of the object?

Two protons P and Q are placed between two charged plates A and B as shown, then

1 atm (Atmospheric Pressure) is equal to :

SI unit of temperature is ________.

There are 4 electric bulb of 50W (each) is used for 5 hour per day. Calculate the energy consumed in the month of January.

Two sitar stings A and B playing a note are slightly out of tune and produces beats of frequency 5 Hz. The tension in string B is slightly increased and beat frequency become 3 Hz. What is the original frequency of B if frequency of A is 427 Hz.

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The truth table for one of the following logic gates is given. Identify the logic gate

Which amongst the following is not a type of lense ?

Why do light emitting diodes are preferred over conventional incandescent low power lamps?

The electric field vector oscillates according to the equation \(\overrightarrow E = 4sin[1.8y +(5.4×10^6)t]\hat k\). The equation of magnetic field vector is:

A coil having 'n' turns and resistance 'R'Ω is connected with a galvanometer of resistance '4R' Ω. What is the induced current in the circuit when this combination (coil+galvanometer) is moved in time t from a magnetic flux Φ1 to Φ2?

The circuits where transformers are used:

A bulb of 100 W glows for 6 hours a day. The units of energy consumed in 7 days would be :

The susceptibility ($X_m$) and permeability (μ) of a perfectly diamagnetic substance are:

The magnitude of electric current is increasing from A towards B. If there is any induced current in the loop as shown in the figure, its direction will be:

Ten capacitors each of 2 µF capacity were arranged in two rows such that first row contains 6 capacitors in series where as the rest were in second row. The equivalent capacitance of the network is:

A charge of 5 μC moves with a speed of $2 \times 10^6$ m/s along the positive y-axis. A magnetic field $\vec{B}$ of strength ($2\hat{i}+ \hat{k}$)T exists in space. The magnetic force acting on the charge is :

An emf of 0.5 V is developed in the secondary coil, when current in primary coil changes from 5.0 A to 2.0 A in 300 milliseconds. The mutual inductance of two coils would be:

Match List I with List II

	LIST I		LIST II
A.	Magnetic dipole moment	I.	Weber/$m^2$
B.	Magnetic permeability	II.	Am (Ampere m)
C.	Pole strength	III.	Henry/m
D.	Magnetic flux density	IV.	$Am^2$ (Ampere $m^2$)

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