Physics questions
20027 published questions with worked solutions.
- From the statements given below: (A) The angular momentum of an electron in n^ th orbit is an integral multiple of ℏ. (B) Nuclear...
- Train A is moving along two parallel rail tracks towards north with speed 72 km/h and train B is moving towards south with speed...
- If frequency of electromagnetic wave is 60 MHz and it travels in air along z direction then the corresponding electric and...
- A body of mass 4 kg experiences two forces F_1 = 5 i + 8 j + 7 k and F_2 = 3 i - 4 j - 3 k. The acceleration acting on the body...
- Match List-I with List-II. List-I (Number): (A) 1001 (B) 010.1 (C) 100.100 (D) 0.0010010 List-II (Significant figure): (I) 3 (II)...
- If the root mean square velocity of hydrogen molecule at a given temperature and pressure is 2 km/s, the root mean square...
- In a metre-bridge when a resistance in the left gap is 2Ω and unknown resistance in the right gap, the balance length is found to...
- A transformer has an efficiency of 80% and works at 10 V and 4 kW. If the secondary voltage is 240 V, then the current in the...
- A uniform rod AB of mass 2 kg and length 30 cm at rest on a smooth horizontal surface. An impulse of force 0.2 Ns is applied to...
- Suppose a uniformly charged wall provides a uniform electric field of 2 10^4 N/C normally. A charged particle of mass 2 g being...
- One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire is attached to the...
- A particle initially at rest starts moving from reference point x = 0 along x-axis, with velocity v that varies as v = 4 x m/s....
- A mass m is suspended from a spring of negligible mass and the system oscillates with a frequency f_1. The frequency of...
- In Young's double slit experiment, monochromatic light of wavelength 5000 Å is used. The slits are 1.0 mm apart and screen is...
- A particular hydrogen-like ion emits the radiation of frequency 3 10^ 15 Hz when it makes transition from n = 2 to n = 1. The...
- A moving coil galvanometer has 100 turns and each turn has an area of 2.0 cm^2. The magnetic field produced by the magnet is 0.01...
- A coil of 200 turns and area 0.20 m^2 is rotated at half a revolution per second and is placed in uniform magnetic field of 0.01...
- A particle moving in a circle of radius R with uniform speed takes time T to complete one revolution. If this particle is...
- Two identical capacitors have same capacitance C. One of them is charged to the potential V and other to the potential 2V. The...
- A galvanometer has a resistance of 50 Ω and it allows maximum current of 5 mA. It can be converted into voltmeter to measure upto...