Physics questions
20027 published questions with worked solutions.
- The velocity of sound in air is doubled when the temperature is raised from 0^ C to ^ C . The value of is
- The work functions of two metals (M_A and M_B) are in the 1:2 ratio. When these metals are exposed to photons of energy 6 eV, the...
- Three charges +2q, +3q and -4q are situated at (0,-3a), (2a,0) and (-2a,0) respectively in the xy plane. The resultant dipole...
- A cylindrical block of mass M and area of cross section A is floating in a liquid of density and with its axis vertical. When...
- Density of water at 4^ C and 20^ C are 1000 kg/m ^3 and respectively. The increase in internal energy of 4 kg water when it is...
- Two resistors of 100 each are connected in series with a 9 V battery. A voltmeter of 400 resistance is connected to measure the...
- The exit surface of a prism with refractive index n is coated with a material having refractive index n/2. When this prism is set...
- In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm. Total magnification...
- A spring of force constant 15 N/m is cut into two pieces. If the ratio of their length is 1:3, then the force constant of smaller...
- Given below are two statements: Statement I: For all elements, greater the mass of the nucleus, greater is the binding energy per...
- A brass wire of length 2 m and radius 1 mm at 27^ C is held taut between two rigid supports. Initially it was cooled to a...
- The electrostatic potential in a charged spherical region of radius r varies as V = ar^3+b, where a and b are constants. The...
- An unpolarised light is incident at an interface of two dielectric media having refractive indices of 2 (incident medium) and 2 3...
- A boy thrown a ball into air at 45º from the horizontal to land it on a roof of a building of height H. If the ball attains...
- There are three co-centric conducting spherical shells A, B and C of radii a, b and c respectively. The potential of the spheres...
- Three masses 200 kg, 300 kg and 400 kg are placed at the vertices of an equilateral triangle with sides 20 m. They are rearranged...
- A short bar magnet placed with its axis at 30º with an external field of 800 Gauss, experiences a torque of 0.016 N.m. The work...Not in JEE Advanced syllabus
- A gas of certain mass filled in a closed cylinder at a pressure of 3.23 kPa has temperature 50ºC. The gas is now heated to double...
- A voltage regulating circuit consisting of Zener diode, having break-down voltage of 10 V and maximum power dissipation of 0.4 W,...
- Sixty four rain drops of radius 1 mm each falling down with a terminal velocity of 10 cm/s coalesce to form a bigger drop. The...