List of top Physics Questions

A ball is thrown vertically upwards with a speed of \( 20 \, \text{m/s} \). What is the maximum height reached by the ball? Assume the acceleration due to gravity is \( g = 9.8 \, \text{m/s}^2 \).
A projectile is fired at an angle of \( 30^\circ \) with an initial velocity of \( 40 \, \text{m/s} \). What is the range of the projectile? Assume \( g = 9.8 \, \text{m/s}^2 \).
A car is moving along a straight road with a constant velocity of 20 m/s. The driver applies the brakes, and the car decelerates at a constant rate of \(4 \, \text{m/s}^2\). How much time will it take for the car to come to rest?
What is the resistance of a conductor if the potential difference across it is 12 V and the current flowing through it is 3 A?
A bulb rated 60 W operates for 2 hours. How much energy does it consume in this time?
The potential energy of a body at a height of 10 meters is 200 J. What is its mass? (Take \( g = 10 \, \text{m/s}^2 \))
A convex lens has a focal length of 10 cm. What is the magnification produced when the object is placed 30 cm from the lens?
A current of 2 A flows through a resistor for 10 minutes. What is the total charge that flows through the resistor?
A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?
What is the focal length of a lens if its power is \( +2 \, \text{D} \)?
A body of mass 10 kg is moving with a speed of 5 m/s. What is the momentum of the body?
A stone is dropped from a height of 45 m. What is the time taken for the stone to reach the ground?
A body of mass 10 kg is moving with a velocity of 20 m/s. What is the kinetic energy of the body?
What is the wavelength of a sound wave with a frequency of \( 500 \, \text{Hz} \) in air? (Take the speed of sound in air as \( 340 \, \text{m/s} \))
A body of mass 5 kg is moving with a velocity of 15 m/s. What is its momentum?
A parallel plate capacitor has a capacitance of \( 4 \, \mu\text{F} \). If the dielectric constant of the material between the plates is \( 5 \), what will be the new capacitance?
A force of \( 10 \, \text{N} \) acts on a body of mass \( 2 \, \text{kg} \). What is the acceleration of the body?
A gas expands from volume \(V\) to \(2V\) at constant pressure \(P\). What is the work done by the gas?
Two point charges \(+2 \, \mu\text{C}\) and \(-2 \, \mu\text{C}\) are placed 0.1 m apart in air. What is the electrostatic force between them?
The energy of a photon is \(6.6 \times 10^{-19} \, \text{J}\). What is the frequency of the photon?
(Take Planck’s constant \(h = 6.6 \times 10^{-34} \, \text{Js}\))
A block of mass \(2\, \text{kg}\) is placed on a smooth horizontal surface. A force of \(10\, \text{N}\) is applied horizontally on the block. What is the acceleration of the block?
A ray of light strikes a plane mirror at an angle of incidence \(30^\circ\). What is the angle between the incident ray and the reflected ray?
A capacitor of capacitance 5 \(\mu\)F is charged to 100 V and then connected to an uncharged capacitor of 2 \(\mu\)F. What is the final potential difference across the capacitors?
A particle moves with a constant speed of 4 m/s in a circular path of radius 2 m. What is its centripetal acceleration?
Which of the following gases has the highest rate of diffusion?