List of top Physics Questions

The time gap between 44% decay and 93% decay of a radioactive substance is 81 minutes. The half-life of the radioactive substance in minutes is:

The value of shunt resistance that allows only 10% of the main current through the galvanometer of resistance \( 99 \Omega \) is:

If the Earth loses its gravitational pull, what will happen to the weight and mass of an object?
A wire of length L and radius R is stretched to get the radius of cross-section halved. What is the new resistance?
Through which phenomenon can we separate different light waves into their respective colors?
Why do farmers irrigate their crops to protect them from heat?
The refractive index of glass is maximum for which color?
The dimensional formula of kinetic energy is equal to which of the following?
The specific fuel consumption of a diesel engine is
In the analysis of a bar bending, the bending is expressed in which axis:
The total energy of a freely falling object:
Two bodies of masses 4 kg and 5 kg are moving with equal momentum. Then, the ratio of their respective kinetic energies is:
Which color has the minimum frequency in the visible spectrum?
What physical quantity is associated with the change in wavelength of a wave?
If the momentum of a body doubles, then its kinetic energy will:
In which process is the rate of heat transfer maximum?
The force that is naturally present in the environment is:
A car covers one-third of the distance at a speed of 10 km/h, the second third at 20 km/h, and the last third at 60 km/h. Find the average speed of the car.
Which type of reflection is produced when light reflects from curved and smooth surfaces?
The mechanical advantage of a wheel and axle system is:
A 75 kg person lifts a 25 kg object to a height of 10 meters in 5 minutes. What is the power used?
A particle is moving with uniform speed in a circular path. What will be the acceleration of the particle?
Kilowatt-hour is the unit of:
The emissivity of a substance is:
Which of the following is the SI unit of electric current?