Physics questions
20027 published questions with worked solutions.
- In an experiment to determine the velocity of sound in air at room temperature using a resonance tube, the first resonance is...
- A potential barrier of 0.4 V exists across a p-n junction. An electron enters the junction from the n-side with a speed of 6.0...Not in JEE Advanced syllabus
- The displacement current of 4.425 A is developed in the space between the plates of parallel plate capacitor when voltage is...
- The moment of inertia of a uniform thin rod about a perpendicular axis passing through one end is I_ 1 . The same rod is bent...
- The half life of a radioactive substance is 5 years. After x years, a given sample of the radioactive substance gets reduced to...
- In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the plane of...
- An inductor of 0.5 mH, a capacitor of 200 F and a resistor of 2 are connected in series with a 220 V ac source. If the current is...
- Two balls A and B are placed at the top of 180 m tall tower. Ball A is released from the top at t = 0 s. Ball B is thrown...
- A body of mass M at rest explodes into three pieces, in the ratio of masses 1 : 1 : 2. Two smaller pieces fly off perpendicular...
- The activity of a radioactive material is 2.56 10^ -3 Ci. If the half life of the material is 5 days, after how many days the...
- A cylinder of fixed capacity of 44.8 litres contains helium gas at standard temperature and pressure. The amount of heat needed...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The...
- A particle of mass 500 gm is moving in a straight line with velocity v = bx^ 5/2 . The work done by the net force during its...
- In van der Wall equation [P + a/V^ 2 ][V - b] = RT; P is pressure, V is volume, R is universal gas constant and T is temperature....
- The escape velocity of a body on a planet 'A' is 12 kms^ -1 . The escape velocity of the body on another planet 'B', whose...
- At a certain place the angle of dip is 30° and the horizontal component of earth's magnetic field is 0.5 G. The earth's total...Not in JEE Advanced syllabus
- A longitudinal wave is represented by x = 10 sin 2 (nt - x/ ) cm. The maximum particle velocity will be four times the wave...
- A parallel plate capacitor filled with a medium of dielectric constant 10, is connected across a battery and is charged. The...
- A positive charge particle of 100 mg is thrown in opposite direction to a uniform electric field of strength 1 10^ 5 NC^ -1 . If...
- Using Young's double slit experiment, a monochromatic light of wavelength 5000 Å produces fringes of fringe width 0.5 mm. If...