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Heavily doped polysilicon is deposited using . . . . . . . .
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statement : Sachin's mother instructed him to return home by train if it rains heavily.

Assumptions :
I. Sachin may not be able to decide himself if it rains heavily.
II. The trains may ply even if it rains heavily.
Utkarsh deposited a certain sum of money in SBI Bank at simple interest at a certain rate for 3 years. Had it been deposited 4% higher rate, it would have fetched Rs. 600 more, then find what amount deposited by Utkarsh in SBI Bank.  
Rs 2400000 is divided between A and B in such a way that A gets twice as much amount as B. B deposited his share at 7% S.I for 7 years and then he deposited the accumulated amount at 19% C.I for 2 years. A deposited his share at 8% C.I for 2 years. They invested their respective accumulated amount in a business which earned a profit of Rs 165428 after one year. What is the difference between their profit shares? 
Raji deposited Rs.80000 in a bank at 10% per annum, compounded annually for two years. She wants to keep the amount deposited at the end of the two years,  Also, the rate of interest was reduced to 6% per annum. What amount should she remove from her account to ensure that she just avoids paying the tax? Assume that her account had zero balance before she deposited Rs. 80,000. Note:To just avoid paying tax, the interest for the third year should be exactly Rs. 3000.
Ram deposited a certain sum of money in a company at 12% per annum simple interest for 4 years and deposited equal amounts in fixed deposit in a bank for 5 years at 15% per annum simple interest. If the difference in the interest from two sources is Rs. 1350 then the sum deposited in each case is = ?
A p-type semiconductor material is doped with ____________ impurities whereas a n-type semiconductor material is doped with __________ impurities
The active layer of E-LED is heavily doped with ____________
1. The pin diode consists of two narrow, but highly doped, semiconductor regions separated by a thicker, lightly doped material called the intrinsic region. 2. Silicon is used most often for its power-handling capability and because it provides a highly resistive intrinsic region. 3. The pin diode acts as an ordinary diode at frequencies above 100 MHz. Which of the above statements are correct?
Silicon is doped with arsenic (concentration 1020 atoms.m-3). At room temperature, the electron and hole mobilities in Si are 0.14 m2.v-1.s-1 and 0.05 m2v-1.s-1 respectively. The conductivity in (?m)-1, at room temperature for Si doped with As is