A small circular loop of conducting wire has radius a and carries current i. It is placed in a uniform magnetic field B perpendicular to its... View Article
A spring mass system (mass m, spring constant k and natural length l) rest in equilibrium on a horizontal disc. The free end of the spring is... View Article
A particle starts from the origin at t = 0 with an initial velocity of . The x- coordinate of the particle at the instant when its y-cordinated... View Article
For the four sets of three measured physical quantities as given below. Which of the following options is correct? (i) A1 = 24.36, B1=0.0724, C1=... View Article
Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuit as shows below at time t=0. If the... View Article
An electron gun is placed inside a long solenoid of radius R on its axis. The solenoid has n turns/length and carries a current i. The electron... View Article
In the given circuit both diodes are ideal having zero forward resistance and built-in potential of 0.7 V. Find the potential of point E in... View Article
A rod of length 1 m pivoted at one end is released from rest when it makes 30° from the horizontal as shown in the figure below. If ω of rod... View Article
A wire of length l = 0.3 m and area of cross-section 10–2 cm2 and breaking stress 4.8×107 N/m2 is attached with a block of mass 10 kg. Find the... View Article
In a fluorescent lamp choke (a small transformer) 100 V of reversible voltage is produced when choke changes current in from 0.25 A to 0 A in... View Article
A charged particle of mass ‘m’ and charge ‘q’ is moving under the influence of uniform electric field . Then which of the following statements... View Article
Consider two ideal diatomic gases A and B at some temperature T. Molecules of the gas A are rigid, and have a mass m. Molecules of the gas B have... View Article
A vessel of depth 2h is half filled with a liquid of refractive index √2 in upper half and with a liquid of refractive index 2√2 in lower half.... View Article
Kinetic energy of the particle is E and it's de–Broglie wavelength is . On increasing its K.E by Δ , it's new de–Broglie wavelength becomes λ/2.... View Article
Radiation with wavelength 6561 AÌŠ falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of... View Article
