Physics questions
20027 published questions with worked solutions.
- A series LCR circuit is connected to an AC source of 220 V, 50 Hz. The circuit contains a resistance R = 80 , an inductor of...
- A spherical drop of liquid splits into 1000 identical spherical drops. If U_i is the surface energy of the original drop and U_f...
- A message signal of frequency 5 kHz is used to modulate a carrier signal of frequency 2 MHz. The bandwidth for amplitude...Not in JEE or NEET syllabus
- Electron beam used in an electron microscope, when accelerated by a voltage of 20 kV, has a de-Broglie wavelength of _0. If the...
- The root mean square velocity of molecules of gas is
- In Young's double slits experiment, the position of 5th bright fringe from the central maximum is 5 cm. The distance between...
- Match List I with List II List-I: (A) Surface tension (B) Pressure (C) Viscosity (D) Impulse List-II: (I) kg m^ -1 s^ -1 (II) kg...
- A bowl filled with very hot soup cools from 98°C to 86°C in 2 minutes when the room temperature is 22°C. How long it will take to...
- T is the time period of simple pendulum on the earth's surface. Its time period becomes xT when taken to a height R (equal to...
- A Carnot engine with efficiency 50% takes heat from a source at 600 K. In order to increase the efficiency to 70%, keeping the...
- A car travels a distance of 'x' with speed v_1 and then same distance 'x' with speed v_2 in the same direction. The average speed...
- An electromagnetic wave is transporting energy in the negative z direction. At a certain point and certain time the direction of...
- A uniform metallic wire carries a current 2 A. When 3.4 V battery is connected across it. The mass of uniform metallic wire is...
- In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant...
- A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m long and 0.2 m in diameter. The magnetic...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Photodiodes...Not in JEE Advanced syllabus
- Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is...
- Match List I with List II List-I (Current configuration): A. [circular loop with current] B. [semicircular wire with straight...
- An LCR series circuit of capacitance 62.5 and resistance of 50 , is connected to an A.C. source of frequency 2.0 kHz. For maximum...
- The distance between two consecutive points with phase difference of 60° in a wave of frequency 500 Hz is 6.0 m. The velocity...