List of top Physics Questions

A gas expands from volume \(V\) to \(2V\) at constant pressure \(P\). What is the work done by the gas?
A body of mass 2 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
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?
A simple pendulum of length 1 m is oscillating with an amplitude of 0.1 m. What is the maximum tension in the string if the mass of the bob is 0.2 kg? (Assume \( g = 10 \, \text{m/s}^2 \))
Which of the following gases has the highest rate of diffusion?
A convex lens has focal length 20 cm. An object is placed at a distance of 40 cm from the lens. What is the position of the image formed?
A particle moves in a circle of radius 2 m with a speed of 6 m/s. What is the centripetal acceleration of the particle?
Which of the following is an example of a scalar quantity?
Which of the following is the correct unit for electric charge?
A car accelerates from rest to a speed of 20 m/s in 10 seconds. What is its acceleration?
The number of significant figures in the measurement 0.00456 is:

Which of the following is the correct electronic configuration for \( \text{Oxygen (O)} \)?

The escape velocity from the surface of a planet is \(v_e\). What will be the escape velocity from a planet whose mass and radius are twice that of the original planet?
A block of mass 5 kg is placed on a frictionless surface and a force of 20 N is applied horizontally. What is the acceleration of the block?
The equivalent resistance between points A and B in a circuit with two resistors of 6 \(\Omega\) each connected in parallel is:
A simple pendulum performing small oscillations at a height R above Earth's surface has a time period of \(T_1 = 4\) s. What would be its time period at a point which is at a height \(2R\) from Earth's surface?
A dust particle of mass 4 × 10⁻¹² mg is suspended in air under the influence of an electric field of 50 N/C directed vertically upwards. How many electrons were removed from the neutral dust particle? (g = 10 m/s²)
In a mixture of gases, the average number of degrees of freedom per molecule is 6. If the rms speed of the molecule is \(c\), what is the velocity of sound in the gas?
A source supplies heat to a system at the rate of 1000 W. If the system performs work at a rate of 200 W, what is the rate at which internal energy of the system increases?
A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?
What is the unit of electric field?
In a series circuit, if the resistance is doubled, what happens to the current?
Calculate the de Broglie wavelength of an electron moving with a given velocity.
Find the focal length of a lens in a compound lens system.