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an electric dipole of dipole moment 20 x 10-6 cm is enclosed by a closed surface what is the net flux coming out of the
assume the condition for balance in a wheatstone bridge using the principle of wheatstone bridge describe the method to determine the specific
write an expression for the force experienced by a charged particle moving in a uniform magnetic field b with the help of a diagram define the
derive an expression for the torque acting on a loop of n turns area a carrying current i when held in a uniform magnetic field with the help of
name the device used for data transmission from single computer to an other justify the nameusing this device draw the block diagram for data
with the help of relevant diagrams define the following termsi pulse-position modulation ppmi pulse-duration modulation
with the help of a bb diagram define the principle of an optical communication systemgive its two advantages over cable communication
write the symbol sad truth table of an and gate define how this gate is realised in practice by using two
draw the circuit diagram of a common-emitter amplifier using an n-p-n transistor draw the input and 1p waveforms of the signal write the expression
explain the term work function of a metal the threshold frequency of a metal is f0 when the light of frequency 2f0 is incident on the metal plate the
state two conditions to obtain sustained interference of lightin youngs double slit experiment using light of wavelength 400 nm in terference fringes
state gauss theorem in electrostatics using this theorem derive the expression for the electric field intensity at any point outside a uniformly
the magnifying power of an astronomical telescope in the normal adjustment position is 100 the distance among the objective and the eye-piece is 101
a compound microscope with an objective of 10 cm focal length and an eye-piece of 20 cm focal length has a tube length of 20 cm measure the
with the help of a diagram show the biasing of a light emitting diode led give its two benefits over conventional incandescent
draw the graph showing the variation of binding energy per nucleon with mass number give the reason for the decline of binding energy per nucleon for
what is the wavelength of electromagnetic waves of frequency 5 x 1019hz in free space give its two
two circular coils one of radius r and the other of radius r are placed coaxially with their centres coinciding for r gtgt r get an expression for
explain the terms i magnetic declination and ii angle of dip at a given
heavy water is often used as a moderator in thermal nuclear reactors give
what i the name given to that kind of electromagnetic spectrum which is used for taking photographs of earth under foggy conditions from great
name the part of modulation scheme preferred for digital
draw a circuit diagram of a common emitter amplifier by using n-p-n transistor show input and output voltages graphicallythe current gain for common
draw a ray diagram to show the formation of image of an object placed among the optical centre and focus of the convex lens write the characteristics
write three special characteristics of the light source used in optical communication name any one optical detector define the meaning of the term