Physics questions
20027 published questions with worked solutions.
- Which of the following statement is not true about stopping potential (V_0)?
- The angular momentum of an electron in a hydrogen atom is proportional to: (Where r is the radius of orbit of electron)
- A galvanometer of resistance 100 Ω when connected in series with 400 Ω measures a voltage of upto 10 V. The value of resistance...
- If n is the number density and d is the diameter of the molecule, then the average distance covered by a molecule between two...
- A particle moves in x-y plane under the influence of a force F such that its linear momentum is P(t) = i (kt) - j (kt). If k is...
- The electrostatic force ( F_1) and magnetic force ( F_2) acting on a charge q moving with velocity v can be written:
- A man carrying a monkey on his shoulder does cycling smoothly on a circular track of radius 9m and completes 120 revolutions in 3...
- A series LCR circuit is subjected to an AC signal of 200 V, 50 Hz. If the voltage across the inductor (L = 10 mH) is 31.4 V, then...
- What is the dimensional formula of ab^ -1 in the equation (P + a V^2 )(V - b) = RT, where letters have their usual meaning.
- A body is moving unidirectionally under the influence of a constant power source. Its displacement in time t is proportional to:
- Match List-I with List-II: List-I (EM-Wave): (A) Infra-red (B) Ultraviolet (C) X-rays (D) Gamma rays List-II (Wavelength Range):...
- During an adiabatic process, if the pressure of a gas is found to be proportional to the cube of its absolute temperature, then...
- Match List-I with List-II: List-I: (A) A force that restores an elastic body of unit area to its original state (B) Two equal and...
- A vernier callipers has 20 divisions on the vernier scale, which coincides with 19th division on the main scale. The least count...
- A heavy box of mass 50 kg is moving on a horizontal surface. If co-efficient of kinetic friction between the box and horizontal...
- A solenoid of length 0.5 m has a radius of 1 cm and is made up of 'm' number of turns. It carries a current of 5A. If the...
- In a single slit experiment, a parallel beam of green light of wavelength 550 nm passes through a slit of width 0.20 mm. The...
- A sonometer wire of resonating length 90 cm has a fundamental frequency of 400 Hz when kept under some tension. The resonating...
- A hollow sphere is rolling on a plane surface about its axis of symmetry. The ratio of rotational kinetic energy to its total...
- The maximum height reached by a projectile is 64 m. If the initial velocity is halved, the new maximum height of the projectile...