List of top Physics Questions

A 0.5 m long solenoid has 100 turns and carries a current of 3A. What is the magnetic field at the center of the solenoid?
A coil of 100 turns, carrying a current of 5A, is placed in a magnetic field of 2T. The area of each turn is 0.01 m\(^2\). What is the magnetic moment of the coil?
The ratio of the average value of kinetic energy to that of potential energy for an SHM is:
A charged particle enters a magnetic field with velocity \( v \) at an angle of \( 60^\circ \) with the field. If the time period of the helical path is 2 seconds, the pitch of the helical path is:
If the charge \(Q\) is given to a conductor, then
Which of the following statements is incorrect with reference to 'Nuclear force'?
A ball is projected vertically up with speed \( V_0 \) from a certain height H. When the ball reaches the ground the speed is \( 3V_0 \). The time taken by the ball to reach the ground and height H respectively are (g = acceleration due to gravity)
A point charge of 3.0 μC is at the center of a cubic Gaussian surface of radius 10 cm. What is the net electric flux through the surface?

Choose the correct nuclear process from the below options:
\( [ p : \text{proton}, n : \text{neutron}, e^- : \text{electron}, e^+ : \text{positron}, \nu : \text{neutrino}, \bar{\nu} : \text{antineutrino} ] \)

The resistance of a wire is \( 10 \, \Omega \) and the current passing through it is \( 2 \, \text{A} \). What is the potential difference across the wire?
A drop of radius \( R \) breaks into \( n \) equal drops. What is the ratio of total final surface energy to initial surface energy?
The maximum speed of a boat in still water is 27 km/h. Now this boat is moving downstream in a river flowing at 9 km/h. A man in the boat throws a ball vertically upwards with speed of 10 m/s. Range of the ball as observed by an observer at rest on the river bank is cm. (Take g = 10 m/s²).
Minimum wavelength of Brackett series corresponds to transition from $ n_1 $ to $ n_2 $, where $ n_1 $ and $ n_2 $ are respectively...
If maximum height and range are equal in projectile motion, then $ \tan \theta = ... $:
The blue colour of clear sky is due to
Advance sunrise and delayed sunset are due to
The formation of a rainbow in the sky involves:
The band of the coloured components of a light beam is called its
The defect myopia can be corrected by using a:
If the speed of light in glass is $ 2 \times 10^8 \, m/s $ and the speed of light in air is $ 3 \times 10^8 \, m/s $, the refractive index of glass with respect to air is:
The minimum distance at which the objects can be seen most distinctly without strain is called
The amount of light entering the eye is regulated and controlled by the
The delicate membrane having enormous number of light sensitive cells is:
The power of a lens is $ 4 \, D $. Its focal length is
If the height of the image is equal to the height of an object placed near a spherical lens, then the magnification $ m $ is