List of top Physics Questions

Write two properties of beta rays.
Mention two different modes of propagation used in communication system.
State and prove Gauss's theorem in electrostatics. Calculate the electric field intensity at a point outside a hollow uniformly charged sphere.
State Kirchhoff's laws and use them to obtain the condition for balance of a Wheatstone bridge.
Explain magnetic moment. Write its SI unit.
Define volume density of charge. Write its SI unit.
Explain Bohr's stable orbit.
Write down two basic differences between interference and diffraction.
Compare the magnetic properties of steel and soft iron.
Write down the difference between nuclear fission and nuclear fusion.
Write two properties of paramagnetic substances.
Write Fleming's left hand rule.
Write the necessary conditions for total internal reflection of light.
Convert decimal numbers 21 and 43 into their equivalent binary numbers.
Mention the two characteristic properties of the material suitable for making the core of a transformer.
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?
Explain electrical resonance.
How does refractive index of any medium depend upon the wavelength of light?
The applied voltage in an alternating circuit is 220 V. If \( R = 8 \, \Omega \) and \( X_L = X_C = 6 \, \Omega \), then find the root mean square value of voltage and impedance of the circuit.
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
If the length of a conductor is doubled while keeping the potential difference across it constant, then the drift velocity of electron will
The unit of current density is