Physics questions
20027 published questions with worked solutions.
- Two waves are simultaneously passing through a string and their equations are : y_1=A_1 k(x-vt), y_2=A_2 k(x-vt+x_0). Given...
- A source of light is placed in front of a screen. Intensity of light on the screen is I. Two Polaroids P_1 and P_2 are so placed...
- If the maximum value of accelerating potential provided by a ratio frequency oscillator is 12 kV. The number of revolution made...
- The acceleration due to gravity is found upto an accuracy of 4% on a planet. The energy supplied to a simple pendulum to known...
- A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with angular speed of 50 rad s^ -1 in a...
- Two simple harmonic motions are represented by the equations x_1=5 (2 t+ 4 ) and x_2=5 2( 2 t+ 2 t). The amplitude of second...
- A coil in the shape of an equilateral triangle of side 10 cm lies in a vertical plane between the pole pieces of permanent magnet...
- The coefficient of static friction between two blocks is 0.5 and the table is smooth. The maximum horizontal force that can be...
- The fractional change in the magnetic field intensity at a distance 'r' from centre on the axis of current carrying coil of...
- Car B overtakes another car A at a relative speed of 40 ms^ -1 . How fast will the image of car B appear to move in the mirror of...
- Inside a uniform spherical shell : (a) the gravitational field is zero (b) the gravitational potential is zero (c) the...
- Two narrow bores of diameter 5.0 mm and 8.0 mm are joined together to form a U-shaped tube open at both ends. If this U-tube...
- An inductor coil stores 64 J of magnetic field energy and dissipates energy at the rate of 640 W when a current of 8A is passed...
- A series LCR circuit driven by 300 V at a frequency of 50 Hz contains a resistance R = 3 k , an inductor of inductive reactance...
- A particular hydrogen like ion emits radiation of frequency 2.92 × 10^ 15 Hz when it makes transition from n = 3 to n = 1. The...
- In a photoelectric experiment ultraviolet light of wavelength 280 nm is used with lithium cathode having work function = 2.5 eV....
- The rms speeds of the molecules of Hydrogen, Oxygen and Carbondioxide at the same temperature then V_H, V_O and V_C respectively...
- In a Screw Gauge, fifth division of the circular scale coincides with the reference line when the ratchet is closed. There are 50...
- What equal length of an iron wire and a copper-nickel alloy wire, each of 2 mm diameter connected parallel to give an equivalent...
- The initial mass of a rocket is 1000 kg. Calculate at what rate the fuel should be burnt so that the rocket is given an...