A small spherical droplet
A small spherical droplet of density d is floating exactly half immersed in a liquid of density ρ and surface... View Article
Latest Posts
A small circular loop
A small circular loop of conducting wire has radius a and carries current i. It is placed in a uniform... View Article
A spring mass system
A spring mass system (mass m, spring constant k and natural length l) rest in equilibrium on a horizontal disc.... View Article
A particle starts from the origin
A particle starts from the origin at t = 0 with an initial velocity of \(\begin{array}{l}\vec{u}=3\hat{i}\end{array} \) from origin and... View Article
For the four sets of three measured physical quantities
For the four sets of three measured physical quantities as given below. Which of the following options is correct? (i)... View Article
Two identical capacitors A and B
Two identical capacitors A and B, charged to the same potential 5V are connected in two different circuit as shows... View Article
An electron gun is placed inside a long solenoid of radius R on its axis.
An electron gun is placed inside a long solenoid of radius R on its axis. The solenoid has n turns/length... View Article
In the given circuit both diodes
In the given circuit both diodes are ideal having zero forward resistance and built-in potential of 0.7 V. Find the... View Article
A rod of length 1 m
A rod of length 1 m pivoted at one end is released from rest when it makes 30° from the... View Article
The distance x covered by a particle in one dimension motion varies as with time as [latex]x^{2} = at^{2} + 2bt + c[/latex], where a, b, c are constants. Acceleration of particle depend on x as [latex]x^{-n}[/latex] , the value of n is;
Let v be velocity,α be the acceleration then, x2 = at2 + 2bt + c 2xv = 2at + 2b... View Article
A wire of length l = 0.3 m
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... View Article
In a fluorescent lamp choke (a small transformer) 100 V of reversible voltage
In a fluorescent lamp choke (a small transformer) 100 V of reversible voltage is produced when choke changes current in... View Article
A charged particle of mass ‘m’ and charge ‘q’
A charged particle of mass ‘m’ and charge ‘q’ is moving under the influence of uniform electric field \(\begin{array}{l}E\hat{i}\end{array} \)... View Article
Consider two ideal diatomic gases A and B
Consider two ideal diatomic gases A and B at some temperature T. Molecules of the gas A are rigid, and... View Article
Two plane electromagnetic waves are moving in vacuum in whose electric field vectors are given by
Two plane electromagnetic waves are moving in vacuum in whose electric field vectors are given by \(\begin{array}{l}\vec{E_{1}} = E_{0}\hat{j} \cos... View Article
In the given circuit diagram
In the given circuit diagram, a wire is joining point B & C. Find the current in this wire; a)... View Article
A vessel of depth 2h
A vessel of depth 2h is half filled with a liquid of refractive index √2 in upper half and with... View Article
A quantity is given by
A quantity is given by f = √(hc5/G), where c is speed of light, G is universal gravitational constant and... View Article
Kinetic energy of the particle
Kinetic energy of the particle is E and it’s de–Broglie wavelength is . On increasing its K.E by Δ ,... View Article
Radiation with wavelength
Radiation with wavelength 6561 Å falls on a metal surface to produce photoelectrons. The electrons are made to enter a... View Article
