11Anyone else?
Q1 If μo and εo represent permeablity and permittivity of vacuum and μ and ε be the permittivity and permeablity of medium,then calculate refractive index of medium.
Q2 In an npn transistor circuit,the collector current is 10mA.If 90% of the electrons are able to reach the collector,then calculate base current and emmiter current.
Q3 Mention the functions for which Zener diode is used.
Q4 A flake of glass(μ=1.5) is placed over one of the opening of double slit apparatus.The interference pattern displaces itself through 7 succesive maximas towards the side where flake is placed.If wavelength of diffracted light is λ=600 nm,then find thickness of flake.
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35 Answers
11GINT(3) = Greatest Integer of 3 = [3] (If u know what i mean)
11Come on ppl. There is no pink for my posts so pls tell me where i went wrong. [2]
11Eureka, don't take revenge for my comments on ur physics questions that i made long ago, yaar. [2]
I'm extrrrrremlely sorry. Pls see if my answers are correct. [2][2]
1????????????????????????????????????????????kya likha hai tunee ...
11BOTH. tell me if im right. If not, tell me where i went wrong
1chida le beta chida le jab kabhi milega to hisab chukta karoonga (dard ka)
1tease me as much u can when u will i will clear all the balance hindi failure ha ha ....∞
11Ya hindi failure [2]....................Got only 93 out of 100 in my Hindi in 10th boards [2]..................Anyways, thanx for ur reply. [3]
1ya fail with 7% *100.=700% ha ha kaise lagi nayi math i got just 90 10/100=0.1 % jyada no. se fail nahi hua
11Tell me where i went wrong, da. It is ur area of speciality. [4]
1while calculatin Ie how cld u take (100/90)*10????
coz emitter current is only due to d movement of e-1 which travels to base ... not all e-1 ll travel into base....
i m not sure of ur ans.. but jus consider dis..
i think given info s not sufficient....
3for the 3) question Zener diode is used in Half wave and Full wave rectifier
11for q 1
v(in medium)=1/√(με)
c=1/√μoεo
and refractive index= c/v
1gud sankara but we have to consider the % of movement of electrons plzzz consider that and have the explanation sankara!!!!!!!!!!!!!![4]
24sorry subash......I raised doubt over Q1....its very easy..........
24options for Q3
a)amplification
b)recitification
c)stabilisation
d)all of the above
1@eureka... no of electrons in emitter shld be given ????????????????????????/