Physics questions
20027 published questions with worked solutions.
- A thin uniform of length 2 m, cross sectional area 'A' and density 'd' is rotated about an axis passing through the centre and...
- In the following circuit, the magnitude of current I_1, is ________A.
- A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of 24 W. The...
- The general displacement of a simple harmonic oscillator is x = Asin . Let T be its time period. The slope of its potential...
- For a solid rod, the Young's modulus of elasticity is 3.2 10^ 11 Nm^ -2 and density is 8 10^3kg m^ -3 . The velocity of...
- A microscope is focused on an object at the bottom of a bucket. If liquid with refractive index 5 3 is poured inside the bucket,...
- Match List I with List II: List-I: (A) Microwaves (B) UV rays (C) Infra-red light (D) X-ray List-II: (I) Physiotherapy (II)...
- If the two metals A and B are exposed to radiation of wavelength 350 nm. The work functions of metals A and B are 4.8 eV and 2.2...
- A body of mass 10 kg is moving with an initial speed of 20 m/s. The body stops after 5 s due to friction between body and the...
- A hypothetical gas expands adiabatically such that its volume changes from 08 litres to 27 litres. If the ratio of final pressure...
- An alternating voltage source V = 260 sin (628t) is connected across a pure inductor of 5 mH. Inductive reactance in the circuit...
- The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by 50%. The...
- A body weight W, is projected vertically upwards from earth's surface to reach a height above the earth which is equal to nine...
- Given below are two statements : Statement I : For transmitting a signal, size of antenna ( ) should be comparable to wavelength...Not in JEE or NEET syllabus
- The H amount of thermal energy is developed by a resistor in 10 s when a current of 4 A is passed through it. If the current is...
- Match List I with List II List-I: (a) Angular momentum (b) Torque (c) Stress (d) Pressure gradient List-II: (I) [ML^2T^ -2 ] (II)...
- Heat energy of 735 J is given to a diatomic gas allowing the gas to expand at constant pressure. Each gas molecule rotates around...
- A water heater of power 2000 W is used to heat water. The specific heat capacity of water is 4200 J kg^ -1 K^ -1 . The efficiency...
- For the given circuit, in the steady state, |V_B-V_D| = ____________V.
- A ball is dropped from a height of 20 m. If the coefficient of restitution for the collision between ball and floor is 0.5, after...