Physics questions
20027 published questions with worked solutions.
- Nucleus A is having mass number 220 and its binding energy per nucleon is 5.6 MeV. It splits in two fragments 'B' and 'C' of mass...
- A baseband signal of 3.5 MHz frequency is modulated with a carrier signal of 3.5 GHz frequency using amplitude modulation method....Not in JEE or NEET syllabus
- A Carnot engine whose heat sinks at 27°C, has an efficiency of 25%. By how many degrees should the temperature of the source be...
- A parallel plate capacitor is formed by two plates each of area 30 cm^ 2 separated by 1 mm. A material of dielectric strength 3.6...
- The magnetic field at the centre of a circular coil of radius r, due to current I flowing through it, is B. The magnetic field at...
- 0.056 kg of Nitrogen is enclosed in a vessel at a temperature of 127°C. The amount of heat required to double the speed of its...
- Two identical thin biconvex lenses of focal length 15 cm and refractive index 1.5 are in contact with each other. The space...
- Sodium light of wavelengths 650 nm and 655 nm is used to study diffraction at a single slit of aperture 0.5 mm. The distance...
- When light of frequency twice the threshold frequency is incident on the metal plate, the maximum velocity of emitted electron is...
- From the top of a tower, a ball is thrown vertically upward which reaches the ground in 6 s. A second ball thrown vertically...
- A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10 g are put one on the top of the other at...
- Identify the pair of physical quantities that have same dimensions :
- The distance between Sun and Earth is R. The duration of year if the distance between Sun and Earth becomes 3R will be :
- A stone of mass m tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is
- Two identical charged particles each having a mass 10 g and charge 2.0 10^ -7 C are placed on a horizontal table with a...
- A Carnot engine takes 5000 kcal of heat from a reservoir at 727°C and gives heat to a sink at 127°C. The work done by the engine...
- What will be the most suitable combination of three resistors A = 2 , B = 4 , C = 6 so that (22/3) is equivalent resistance of...
- The soft-iron is a suitable material for making an electromagnet. This is because soft-iron hasNot in JEE Advanced syllabus
- A proton, a deuteron and an -particle with same kinetic energy enter into a uniform magnetic field at right angle to magnetic...
- Given below are two statements: Statement-I : The reactance of an ac circuit is zero. It is possible that the circuit contains a...