Physics questions
20027 published questions with worked solutions.
- In a metre bridge experiment null point is obtained at 20 cm from one end of the wire when resistance X is balanced against...
- The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer...Not in JEE Advanced syllabus
- The materials suitable for making electromagnets should haveNot in JEE Advanced syllabus
- The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4 cm from the...
- Two long conductors, separated by a distance d carry current I_1 and I_2 in the same direction. They exert a force F on each...
- A coil having n turns and resistance 4RΩ. This combination is moved in time t seconds from a magnetic field W_1 weber to W_2...
- In a uniform magnetic field of induction B a wire in the form of semicircle of radius r rotates about the diameter of the circle...
- A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 radians per second. If the...
- Alternating current can not be measured by D.C. ammeter because
- In an LCR series a.c. circuit, the voltage across each of the components, L, C and R is 50 V. The voltage across the LC...
- In a LCR circuit capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be...
- An electromagnetic wave of frequency v = 3.0MHz passes from vacuum into a dielectric medium with permittivity = 4.0. Then
- A plane convex lens of refractive index 1.5 and radius of curvature 30 cm is silvered at the curved surface. Now this lens has...
- The angle of incidence at which reflected light totally polarized for reflection from air to glass (refractive index n ), is
- The maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young's double-slit...
- A radiation of energy E falls normally on a perfectly reflecting surface. The momentum transferred to the surface is
- According to EInstein's photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal V_s...
- The work function of a substance is 4.0eV. Then longest wavelength of light that can cause photoelectron emission from this...
- The manifestation of band structure in solids is due toNot in JEE Advanced syllabus
- The binding energy per nucleon of deuteron ( _1^2H ) and helium nucleus ( _2^4He ) is 1.1MeV and 7MeV respectively. If two...