Physics questions
20027 published questions with worked solutions.
- Two light beams of intensities 4I and 9I interfere on a screen. The phase difference between these beams on the screen at point A...
- A wire of length 314 cm carrying current of 14 A is bent to form a circle. The magnetic moment of the coil is _____ A-m^ 2 ....
- The X-Y plane be taken as the boundary between two transparent media M_ 1 and M_ 2 . M_ 1 in Z 0 has a refractive index of 2 and...
- If the potential barrier across a p-n junction is 0.6 V. Then the electric field intensity, in the depletion region having the...
- A small toy starts moving from the position of rest under a constant acceleration. If it travels a distance of 10 m in t s, the...
- At what temperature a gold ring of diameter 6.230 cm be heated so that it can be fitted on a wooden bangle of diameter 6.241 cm?...
- Two point charges Q each are placed at a distance d apart. A third point charge q is placed at a distance x from mid-point on the...
- The speed of light in media 'A' and 'B' are 2.0 10^ 10 cm/s and 1.5 10^ 10 cm/s respectively. A ray of light enters from the...
- The electric field at a point associated with a light wave is given by E = 200[ (6 10^ 15 )t + (9 10^ 15 )t] Vm^ -1 . Given : h =...
- A capacitor is discharging through a resistor R. Consider in time t_ 1 , the energy stored in the capacitor reduces to half of...
- Two long current carrying conductors are placed parallel to each other at a distance of 8 cm between them. The magnitude of...
- The time period of a satellite revolving around earth in a given orbit is 7 hours. If the radius of orbit is increased to three...
- The TV transmission tower at a particular station has a height of 125 m. For doubling the coverage of its range, the height of...Not in JEE or NEET syllabus
- The motion of a simple pendulum executing S.H.M. is represented by the following equation. y = A ( t + ), where time is measured...
- Given below are two statements: Statement I : The electric force changes the speed of the charged particle and hence changes its...
- If the electric potential at any point (x, y, z)m in space is given by V = 3x^ 2 volt. The electric field at the point (1, 0, 3)m...
- The combination of two identical cells, whether connected in series or parallel combination provides the same current through an...
- A person can throw a ball upto a maximum range of 100 m. How high above the ground he can throw the same ball?
- The vernier constant of Vernier callipers is 0.1 mm and it has zero error of (−0.05) cm. While measuring diameter of a sphere,...
- A small spherical ball of radius 0.1 mm and density 10^ 4 kg m^ -3 falls freely under gravity through a distance h before...