Okay so firstly emission light spectrum is in case of hot gases whereas the absorption line spectrum is in case of cool gases.
Emission line spectrum:
In hot gases, the electrons have already gained the energy gap difference between successive levels and thus gradually are losing that energy...
Because it is after the first absroption that the internal reflection occurs. That is I is incident on the muscle and then atenuation or absroption occurs and then it reaches the boundary where it is internally reflected when it is comming back it is atenuated again.
Thing is, the ray is being absorbed twice and is being total internally reflected once.
So first I is being absorbed so we have 0.39I being transmitted to the bone and muscle boundary. 0.33 times 0.39 is then being internally reflected so we have 0.33 x 0.39I. Then again when it is moving from...
U have to do this wid expressions.. first find the expression for overall resistance of the circuit.. which is 1/R= 1/R1+ 1/R2 for parallel plus the series. u get 3R/2 .. then do P=I2R for the whole circuit.. in R put the value of the combined resistance.. u will get an expression for I2 = 8/R...
Firstly, if there are 300 lines in 1mm then there would be 300 x 1000 lines in 1meter .. therefore D is 1/300000.
taking lamda as @..
[email protected]= d sin&
put in the values of @ and d.
and take the value of [email protected] as 1 because thats the value for the maximum angle
Find N.. it is somewhat 4.84
Thing is...
12: Its more of a mechanics question.. First find the acceleration from the two equations. . i- T-800= 8a and
ii) 1200-0T=1200a .. u get a= 2ms-2.. we kno that for a pulley,, the two components travels the same distance and with teh same speed.. so the two bodies will meet half way between 18 m...
OCT 09 11 Number 12
The angle that T1 makes with R is greater than the angle that T2 makes with R.
R has to be balanced by the horizontal componts of T1 and T2..
Let the angle be @
R= [email protected] + [email protected] and R= [email protected] + [email protected]
We can see that for cos,, the greater the angle.. less the value of...
MJ 12
MJ 12 Nmber 12:
First, we find the common acceleration,
From the two formulas: ( linek in Mechanics)
T- 800= 80a
1200-T= 120a
We get acceleartion = 2.
We kno that in case of pulley, the distance moved by man up is equal to the distance fallen by the bag, thus the two will come to...
OCT NOV 12 Paper 11 number 23:
F=ke
For spring R, Load is F is W and k is 3k
Therefore, e= W/ 3k
For P or Q, the load is W/2 and spring constnt is k.
Therefore, e= W/2 /k or W/2k
The Overall extension of P and Q is just one of there extensions.. Therefore, total extension is extension of...
5 An athlete bends down and then jumps straight up into the air. At the instant he starts his jump three forces act on him – his weight, an upthrust from the air and the contact force with the
ground. What is the correct order in increasing magnitude of these three forces? [1]
A contact force →...
the magnitude or strength of fields depends upon the separation between the lines.. if the separation is increasing then the strength of the field is decreasing and if the separation between the fields are decreasing, the field is increasing. When the field is approaching the earthed plate, u...