પ્રકાર I: એક બિંદુ P વર્તુળના કેન્દ્રથી 13cm છે. માંથી દોરેલા સ્પર્શકની લંબાઈ

Type I: A point P is 13cm from the center of the circle.The length of the tangent drawn from P to the circle is 12cm. Find the radius of the circle?

In Fig 29-40 point P_(2) is at perpendicular distance R=25.1 cm from one end of a straight wire of length L=13.6 cm carrying current i=0.500 A. (Note that the wire is not long ) (a) What is the magnitude of the magnetic field at P_(2) ? (b) If the point of measurement is moved from P_(2) to P_(1) does the field magnitude increase, decrease, or remain the same ?

The electron concentration and hole concentration in a semicoinductor are 6xx10^(13) and 7xx10^(13) cm^(3) (i) what is the nature of semiconductor p type or n type (ii) find the resistivity of the sample if electron mobility is 24000 and holw mobility is 200 cm^(2) V^(-1)S^(-1)

A semiconductor has an electron concentration of 8xx10^(13) per cm^(3) and a hole concentration of 5xx10^(12) per cm^(3) . The electron mobilityis 25,000 cm^(2)V^(-1)sec^(-1) and the hole mobility is 100cm^(2)V^(-1)sec^(-1) and the hole mobility is 100cm^(2)V^(-1)sec^(-1) (i) The semiconductor is n -type (ii) the semiconductor is p -type (iii) the conductivity is 320m mho cm^(-1) (iv) the conductivity is 80m mho cm^(-1)

{:(Column I,Column II),((A)H,(p)"Radius of"4^(th)"orbit"0.53 xx 4overset(0)(A)),((B)He^(+),(q)"Energy of"2^(nd)"orbit"=-13.6eV),((C)Be^(3+),(r)"Radius of"2^(nd)"orbit"=0.53 xx 4overset(0)(A)),((D)Li^(2+),(s)"Velocity of electron in the 3rd orbit"=2.18 X 10^(8)cm//sec):}