Physics questions
20027 published questions with worked solutions.
- A particle of mass m is moving along a trajectory given by x = x_0 + a _1t, y = y_0 + b _2t. The torque, acting on the particle...
- The value of acceleration due to gravity at Earth's surface is 9.8 ms^ -2 . The altitude above its surface at which the...
- A ball is thrown upward with an initial velocity V_0 from the surface of the earth. The motion of the ball is affected by a drag...
- A uniformly charged ring of radius 3a and total charge q is placed in xy-plane centred at origin. A point charge q is moving...
- n moles of an ideal gas with constant volume heat capacity C_V undergo an isobaric expansion by certain volume. The ratio of the...
- Two radioactive materials A and B have decay constants 10λ and λ, respectively. If initially they have the same number of nuclei,...
- The displacement of a damped harmonic oscillator is given by x(t) = e^ -0.1t (10 t + ). Here t is in seconds. The time taken for...
- In a communication system operating at wavelength 800 nm, only one percent of source frequency is available as signal bandwidth....Not in JEE or NEET syllabus
- The magnetic field associated with a light wave is given, at the origin, by B = B_0[ (3.14 10^ 7 )ct + (6.28 10^ 7 )ct]. If this...
- A rod of mass 'M' and length '2L' is suspended at its middle by a wire. It exhibits torsional oscillations; If two masses each of...
- A series AC circuit containing an inductor (20 mH), a capacitor (120 μF) and a resistor (60 Ω) is driven by an AC source of 24...
- A force acts on a 2 kg object so that its position is given as a function of time as x = 3t^2 + 5. What is the work done by this...
- In a Young's double slit experiment, the slits are placed 0.320 mm apart. Light of wavelength λ = 500 nm is incident on the...
- Two Carnot engines A and B are operated in series. The first one, A, receives heat at T_1 (= 600 K) and rejects to a reservoir at...
- Two plane mirrors are inclined to each other such that a ray of light incident on the first mirror (M_1) and parallel to the...
- Expression for time in terms of G (universal gravitational constant), h (Planck constant) and c (speed of light) is proportional...
- In a car race on straight road, car A takes a time t less than car B at the finish and passes finishing point with a speed 'v'...
- A mass of 10 kg is suspended vertically by a rope from the roof. When a horizontal force is applied on the rope at some point,...
- The pitch and the number of divisions, on the circular scale, for a given screw gauge are 0.5 mm and 100 respectively. When the...
- A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The...