JEE Physics - MCQ Practice Questions

A 3 kg ball is thrown horizontally from a height of 20 m with initial velocity 15 m/s. What is its horizontal displacement when it hits the ground? (g = 10 m/s²)

Two balls of equal mass collide elastically in a 1D head-on collision. Ball A has velocity 5 m/s and Ball B is at rest. After collision, what is Ball A's velocity?

A car rounds a horizontal curve of radius 100 m at 20 m/s. What minimum coefficient of friction is needed to prevent skidding? (g = 10 m/s²)

A ball is dropped from rest at height h. If air resistance causes 20% energy loss, what is its final velocity? (g = 10 m/s², h = 5 m)

A rectangular block of dimensions 10 cm × 20 cm × 30 cm is floating in water. Which orientation is most stable?

A 4 kg block on a rough horizontal surface experiences friction force f = 12 N when moving. If pushed with force 20 N, what is the kinetic energy after traveling 5 m from rest?

A 6 kg object is subject to two perpendicular forces: F₁ = 8 N and F₂ = 6 N. What is the magnitude of acceleration?

A ball is thrown vertically upward with velocity 30 m/s. At what time does it return to the ground level? (g = 10 m/s²)

Two blocks A (mass 3 kg) and B (mass 2 kg) are connected by a light string over a frictionless pulley. Block A is on a smooth horizontal surface and B hangs vertically. What is the acceleration of the system? (g = 10 m/s²)

A particle of mass m undergoes motion with velocity v(t) = 3t² + 2t (in m/s). What is the net force on the particle when t = 2 s, if m = 2 kg?

A gas undergoes an isothermal process at 300 K. If the initial volume is 2 L and final volume is 5 L, what is the work done by the gas? (Take R = 8.314 J/(mol·K), n = 1 mol)

In an adiabatic process with a diatomic ideal gas (γ = 1.4), if the initial temperature is 300 K and volume increases by factor of 2, what is the final temperature?

A cyclic process consists of two isothermal and two adiabatic processes (Carnot cycle). What is true about the heat exchanges?

In an isobaric process, 5 moles of a monoatomic ideal gas are heated from 300 K to 400 K. What is the heat supplied? (R = 8.314 J/(mol·K))

Which process is represented by PVⁿ = constant?

A gas expands isothermally from 1 L to 10 L against a constant external pressure of 1 atm. What is the work done? (1 L·atm = 101.325 J)

A reversible cycle absorbs 100 J at 400 K and rejects heat at 300 K. What is the minimum heat rejected?

For a van der Waals gas, which statement is correct?

In an expansion process, a gas does 500 J of work and absorbs 300 J of heat. What is the change in internal energy?

During an isobaric expansion of an ideal gas, the work done by the gas is 400 J. If pressure is constant at 2 atm, what is the change in volume? (1 atm = 101325 Pa)