Physics questions
20027 published questions with worked solutions.
- A 0.4 kg mass takes 8 s to reach ground when dropped from a certain height 'P' above surface of earth. The loss of potential...
- A point charge q_1=4q_0 is placed at origin. Another point charge q_2=-q_0 is placed at x = 12 cm. Charge of proton is q_0. The...
- A solid sphere of mass 2 kg is making pure rolling on a horizontal surface with kinetic energy 2240 J. The velocity of centre of...
- Two simple harmonic waves having equal amplitudes of 8 cm and equal frequency of 10 Hz are moving along the same direction. The...
- In a metre bridge experiment the balance point is obtained if the gaps are closed by 2 and 3 . A shunt of X is added to 3...
- A tennis ball is dropped on to the floor from a height of 9.8 m. It rebounds to a height 5.0 m. Ball comes in contact with the...
- A body cools from 60°C to 40°C in 6 minutes. If, temperature of surroundings is 10°C. Then, after the next 6 minutes, its...
- A force is applied to a steel wire 'A', rigidly clamped at one end. As a result elongation in the wire is 0.2 mm. If same force...
- Match List I with List II: List-I: (A) Torque (B) Energy density (C) Pressure gradient (D) Impulse List-II: (I) kgm^ -1 s^ -2...
- Match List I with List II: List-I: (A) Attenuation (B) Transducer (C) Demodulation (D) Repeater List-II: (I) Combination of a...Not in JEE or NEET syllabus
- In the given circuit, rms value of current (I_ rms ) through the resistor R is
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Efficiency of a...
- For a simple harmonic motion in a mass spring system shown, the surface is frictionless. When the mass of the block is 1 kg, the...
- An object is allowed to fall from a height R above the earth, where R is the radius of earth. Its velocity when it strikes the...
- A thin prism P_1 with an angle 6° and made of glass of refractive index 1.54 is combined with another prism P_2 made from glass...
- A point source of 100 W emits light with 5% efficiency. At a distance of 5 m from the source, the intensity produced by the...
- An electron accelerated through a potential difference V_1 has a de-Broglie wavelength of . When the potential is changed to V_2,...
- A radioactive nucleus decays by two different process. The half life of the first process is 5 minutes and that of the second...
- A faulty thermometer reads 5°C in melting ice and 95°C in steam. The correct temperature on absolute scale will be ____________K...
- If the potential difference between B and D is zero, the value of x is 1 n . The value of n is __________.