Physics questions
20027 published questions with worked solutions.
- At some location on earth the horizontal component of earth's magnetic field is 18 10^ -6 T. At this location, magnetic needle of...Not in JEE Advanced syllabus
- The self induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10 A to 25 A in 1 s, the...
- Half mole of an ideal monoatomic gas is heated at constant pressure of 1 atm from 20°C to 90°C. Work done by gas is close to:...
- The modulation frequency of an AM radio station is 250 kHz, which is 10% of the carrier wave. If another AM station approaches...Not in JEE or NEET syllabus
- The electric field of a plane polarized electromagnetic wave in free space at time t = 0 is given by an expression E(x, y) = 10 j...
- Two forces P and Q, of magnitude 2F and 3F, respectively, are at an angle θ with each other. If the force Q is doubled, then...
- The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of cornea (7.8...
- A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel...
- An unknown metal of mass 192 g heated to a temperature of 100°C was immersed into a brass calorimeter of mass 128 g containing...
- A particle which is experiencing a force, given by F = 3 i - 12 j, undergoes a displacement of d = 4 i. If particle had a kinetic...
- A particle executes simple harmonic motion with an amplitude of 5 cm. When the particle is at 4 cm from the mean position, the...
- A parallel plate capacitor having capacitance 12 pF is charged by a battery to a potential difference of 10 V between its plates....
- A heat source at T = 10^3 K is connected to another heat reservoir at T = 10^2 K by a copper slab which is 1 m thick. Given that...
- A satellite is moving with a constant speed v in circular orbit around the earth. An object of mass 'm' is ejected from the...
- A TV transmission tower has a height of 140 m and the height of the receiving antenna is 40 m. What is the maximum distance up to...Not in JEE or NEET syllabus
- A train moves towards a stationary observer with speed 34 m/s. The train sounds a whistle and its frequency registered by the...
- To mop-clean a floor, a cleaning machine presses a circular mop of radius R vertically down with a total force F and rotates it...
- A solid metal cube of edge length 2 cm is moving in a positive y-direction at a constant speed of 6 m/s. There is a uniform...
- In a Young's double slit experiment with slit separation 0.1 mm, one observes a bright fringe at angle 1 40 rad by using light of...
- The density of a material in SI units is 128 kg m^ -3 . In certain units in which the unit of length is 25 cm and the unit of...