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"ONE MACHINE CAN DO THE WORK Of FIFTY ORDINARY MAN , NO MACHINE CAN DO THE WORK OF ONE EXTRA ORDINARY MAN"

Saturday, 18 February 2012

MOST IMPORTANT QUESTION FOR PHYSICS-1 FOR BCA

                       Important Question For Physics-I
                      ==========================
(1) Derive the expression for the intensity of electrical potential at the point due
    to a dipole on the axial position and on the equatorial line.

(2) State  the coulomb's law and derive the equation for the
     law and define a unit charge.

(3) Obtain an expression of the capacitance of a parallel-
     plate capacitor when filled with partial  dielectric.

(4) explain the terms magnetic permeability and magnetic
      susceptibility of a magnetised madium and obtain a
      relationship between them.

(5) What are paramagnetic,diamagnetic and ferromagnetic
      substance.Give an example of each.

(6) Explain the B-H loop.Show that the hytersis loss per
     cycle of magtetization per unit volume of substance is
     equal to the area of B-H loop.

(7) Define magnetic circuit, reluctance and permeance.

(8) Define resistance,reactance and impedance.

(9) Derrive an expression for power in L-C-R circuit.

(10) Define r.m.s. value of alternating current establish
       relation between r.m.s. value and peak value.

(11) What is ohm's law. Give the statment and the working farmula.

(12) Explain corbon color coding in resistance.

(13) State and explain Kirchhoff's voltage and current laws.
     Also state its rules for electrical networks.

(14) State thevenin's theorem.

(15) State maximum power transfer theorem.

(16) How does energy bands from the solids.

(17) With the help of energy band diagram explain difference between conductor, insulator and
     semiconductor.

(18) What is zener diode. explain its working with the
     help of characterstics curve and discuss.

(19) What is transistor. explain p-n-p nad n-p-n transistor.

(20) Write short not on super conductivity.
                     or
     write short not on meissner's effect's.

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A.Kushwah

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