List of top Physics Questions

The acceleration of a particle varies with time as \( a = 6t \). What is the displacement and velocity of the particle at \( t = 4s \)?
Electric field lines around a positive charge are directed:
What is the dimension of \[ \frac{M B}{K T} \] where \( M \) represents magnetic moment, \( K \) represents the Boltzmann constant, \( B \) represents the magnetic field, and \( T \) represents temperature?
What is the ratio of de Broglie wavelength of the particles if their kinetic energy are 0.002 eV and 2 eV respectively?
Relations between the speed of X-ray, gamma-ray, and UV rays when they travel in a vacuum.
The fundamental frequency of a string of length \( l \) is \( n \). The string is cut into 3 parts \( l_1, l_2, \) and \( l_3 \), each having fundamental frequency \( n_1, n_2, n_3 \). Then, what is the relationship between \( n_1, n_2, n_3 \)?
A cylindrical vessel contains 16 kg at 1 atm. A certain amount of substance is taken out so that pressure becomes 0.7 atm. Find the amount taken out (in kg).
What is the maximum wavelength to excite a hydrogen atom?
Brewster's angle should lie between?
After a collision, two particles move together, then the collision is?
A solid sphere, hollow sphere, and solid cylinder start sliding from an inclined plane without rolling. Then the ratio of time taken by them to reach the ground is?
How can we decrease the effective capacitance of a parallel plate capacitor?
If the half-life of \( D \) is 1500 years and \( B \) is 2000 years, what is the mean lifetime?
In an equilateral triangle with each side having resistance \( R \), what is the effective resistance between two sides?
\( M^0 L T^{-1} \) is the dimension of ___________?
Number of degrees of freedom for the monoatomic gas molecule is?
A body of mass 0.8kg moves with velocity \( v = 2x^2 + 2 \, \text{m/s} \). What is the work done during its motion from \( x = 0 \) to \( x = 2 \, \text{m} \)?
Electrostatic force is maximum when charge \( Q \) is placed at ------?
Relation between the drift velocity and an electric field is ----?
De Broglie wavelength of a quantum photon having energy \( E \)?
The inward electric flux through a closed surface is \( 6 \times 10^{-5} \) and the outward flux is \( 3 \times 10^{-5} \). Then the total charge enclosed is?
Find the resistance required to be connected to a galvanometer of resistance \(100 \, \Omega\) with a full scale deflection of 1mA into a voltmeter of range 1V.
In a Carnot engine, efficiency is dependent on ________?
What phenomenon is explained by the wave nature of electromagnetic radiation?
The ratio of the angular speed of the minute hand to the second hand of a watch is?