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Vivek Singh
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Former Director — Vibrant Academy | Former Faculty — Aakash Institute
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NEET 2015:If potential (in volts) in a region is expressed asV(x,y,z)=6xy−y+2yz, the electric field
October 23, 2025
Description If potential (in volts) in a region is expressed as V ( x , y , z ) = 6 x y − y + 2 y z , the electric field (in N / C ) at point ( 1 , 1 , 0 ) is Related Questions A thin strip 10 cm
By 2 methods NEET 2016:The electric field in a certain region is acting radially outwards and is giv
October 23, 2025
Description The electric field in a certain region is acting radially outwards and is given by E = A r . A charge contained in a sphere of radius ‘ a ‘ centred at the origin of the field, will given by Related Questions A thin strip 10 cm long is on a U shaped
Error in question NEET 2016:A parallel plate capacitor of area A, plate separation d and capacitance
October 23, 2025
Description A parallel plate capacitor of area A, plate separation d and capacitance C is filled with four dielectric materials hving dielectric constants K 1 , K 2 , K 3 and K 4 as shown in the figure below. If a single dielectric material is to be used to have the same capacitance c
One mistake maximum students do :Suppose the charge of a proton and an electron differ slightely.One
October 23, 2025
Description Suppose the charge of a proton and an electron differ slightely. One of them is – e , the other is ( e + Δ e ) . If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero.
Progressive and standing waves
October 5, 2025
Description Related Questions JEE MAIN 2025(29jan shift1)Given below are two Assertion (A) : Electromagnetic waves carry energy bu The amplitude of wave disturbance propagating in the positive x-direction is given by y = 1 ( 1 + x ) 2 at time t =0 and y = 1 1 + ( x − 2 )
Boring or simple ?
September 20, 2025
Description Related Questions AIPMT (2010mains)Two parallel metal plates having charges +Q and -Q face each other at a certain dis AIPMT 2011 : A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is d NEET 2013: A,B and C are three points in a uniform electric field. The
5 September 2025
September 5, 2025
Description Related Questions AIPMT 2007 :Two condensers, one of capacity C and other of capacity & are connected to a othecond, AIPMT 2007:Three point charges +q, – 2q and +q are placed at points(x = 0, y = a, z = 0) AIPMT2007:Charges +q and -q are placed at points A and B respectively which
(By 3 methods+reason why 4th is wrong) AIPMT 1998 :Two particles A and B are connected by a rigid ro
August 17, 2025
Description Two particles A and B are connected by a rigid rod AB. The rod slides along perpendicular rails as shown here. The velocity of A to the left is 10m ∕ s . What is the velocity of B when angle α = 60°? Related Questions AIPMT 2010:A particle has initial velocity (3i +
AIPMT 1999:What is the value of linear velocity, if r = 3i − 4j + k and →ω = 5i − 6 j + 6 k ?
August 11, 2025
Description What is the value of linear velocity, if →r = 3^i − 4^j + ^k and →ω = 5 ^i − 6 ^j + 6 ^k ? Related Questions AIPMT 2010:A particle has initial velocity (3i + 4j ) and has acceleration(0.4i + 0.3j ). Its speed NEET2011:A body is moving with velocity 30
AIPMT 1999:If a unit vector is represented by 0.5^i − 0.8^j + c^k then the value of c
August 11, 2025
Description If a unit vector is represented by 0.5^i − 0.8^j + c^k then the value of c Related Questions AIPMT (2010mains)Two parallel metal plates having charges +Q and -Q face each other at a certain dis AIPMT 2011 : A charge Q is enclosed by a Gaussian spherical surface of radius R. If the
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