Physics questions
20027 published questions with worked solutions.
- The energy released per fission of nucleus of ^ 240 X is 200 MeV. The energy released if all the atoms in 120 g of pure ^ 240 X...
- If a copper wire is stretched to increase its length by 20%. The percentage increase in resistance of the wire is _____________%.
- A travelling wave is described by the equation y(x, t) = [0.05 sin (8x – 4t)] m The velocity of the wave is: [all the quantities...
- Consider the following radioactive decay process ^ 218 _ 84 A A_1 ^- A_2 A_3 A_4 ^+ A_5 A_6 The mass number and the atomic number...
- The weight of a body at the surface of earth is 18 N. The weight of the body at an altitude 3200 km above the earth's surface is...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Photodiodes...Not in JEE Advanced syllabus
- Given below are two statements : Statement I : If the Brewster's angle for the light propagating from air to glass is _B, then...
- Given below are two statements : Statement I : The temperature of a gas is –73°C. When the gas is heated to 527°C, the root mean...
- Two long straight wires P and Q carrying equal current 10A each were kept parallel to each other at 5 cm distance. Magnitude of...
- A conducting circular loop of radius 10 cm is placed perpendicular to a uniform magnetic field of 0.5 T. The magnetic field is...
- 1 g of a liquid is converted to vapour at 3 10^5P_a pressure. If 10% of the heat supplied is used for increasing the volume by...
- If two charges q_1 and q_2 are separated with distance 'd' and placed in a medium of dielectric constant K. What will be the...
- Given below are two statements: Statement I: An elevator can go up or down with uniform speed when its weight is balanced with...
- In E and K represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by: (...
- Match List I with List II List-I: (A) Planck's constant (h) (B) Stopping potential (Vs) (C) Work function ( ) (D) Momentum (p)...
- From the photoelectric effect experiment, following observations are made. Identify which of these are correct. A. The stopping...
- The maximum vertical height to which a man can throw a ball is 136 m. The maximum horizontal distance upto which he can throw the...
- A 100 m long wire having cross-sectional area 6.25 10^ -4 m^2 and Young's modulus is 10^ 10 Nm^ -2 is subjected to a load of 250...
- A hole is drilled in a metal sheet. At 27°C, the diameter of hole is 5 cm. When the sheet is heated to 177°C, the change in the...
- A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5th second. The force acted...