Physics questions
20027 published questions with worked solutions.
- A light wave travelling linearly in a medium of dielectric constant 4, incidents on the horizontal interface separating medium...
- Given below are two statements : Statement I: Davisson-Germer experiment establishes the wave nature of electrons. Statement II:...
- The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because :Not in JEE Advanced syllabus
- A signal of 100 THz frequency can be transmitted with maximum efficiency by :
- The difference of speed of light in the two media A and B, ( _ A - _ B ) is 2.6 10^ 7 m/s. If the refractive index of medium B is...
- A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the...
- A uniform chain of 6 m length is placed on a table such that a part of its length is hanging over the edge of the table. The...
- A 0.5 kg block moving at a speed of 12 ms^ -1 compresses a spring through a distance 30 cm when its speed is halved. The spring...
- The velocity of upper layer of water in a river is 36 kmh^ -1 . Shearing stress between horizontal layers of water is 10^ -3 Nm^...
- A steam engine intakes 50 g of steam at 100°C per minute and cools it down to 20°C. If latent heat of vaporization of steam is...
- The first overtone frequency of an open organ pipe is equal to the fundamental frequency of a closed organ pipe. If the length of...
- A resistor develops 300 J of thermal energy in 15 s, when a current of 2 A is passed through it. If the current increases to 3 A,...
- The current in a coil of self inductance 2.0 H is increasing according to I = 2 (t^ 2 ) A. The amount of energy spent during the...
- A force on an object of mass 100 g is (10 i + 5 j ) N. The position of that object at t = 2 s is (a i + b j ) m after starting...
- Two projectiles are thrown with same initial velocity making an angle of 45° and 30° with the horizontal respectively. The ratio...
- In a Vernier Calipers, 10 divisions of Vernier scale is equal to the 9 divisions of main scale. When both jaws of Vernier...
- A ball of mass 0.15 kg hits the wall with its initial speed of 12 ms^ -1 and bounces back without changing its initial speed. If...
- The oscillating magnetic field in a plane electromagnetic wave is given by B_y = 5 10^ -6 sin 1000 (5x - 4 10^ 8 t) T. The...
- Light travels in two media M_ 1 and M_ 2 with speeds 1.5 10^ 8 ms^ -1 and 2.0 10^ 8 ms^ -1 respectively. The critical angle...
- A body is projected vertically upwards from the surface of earth with a velocity equal to one third of escape velocity. The...