Vriti Edustoreformulas in optics
16 Apr 2007 11:09:13 IST
formulas in optics
Engineering Entrance
,
JEE Main
,
JEE Advanced
,
Physics
,
Optics
,
some formulas in optics
1)
= 2pi (x) / lamda = phase diff. ................del. x is path diff.2)normal shift
S = t (1 - 1/
).....................( is not whole divided)
).....................( is not whole divided)Swater = t/4
Sglass = t/3
3)wen a lens is cut into 2 = parts perpendicular to its principal axis , focal length gets doubled and power gets halved
4)wen a lens is cut into 2 = parts parallel to its P. Axis , no change in focal length or power takes place
5)Goggles donot hav any power coz R1 = R2 = R for them
so p = ( - 1) (1/R1 - 1/R2)
- 1) (1/R1 - 1/R2)6)wen a lens is submerged in a denser medium its focal length inc and power dec.
7)wen a lens is submerged in water its focal length inc by 4 times and power dec. by 4 times
8)wen a lens is submerged in a medium of greater R.I then its nature reverses
9)Min. length of a plane mirror reqired to see full image of the object of ht. 'h' is h/2
10)* formula to calculate no. of images frmed b/w 2 mirrors is given by
n = 360/theta - 1
eg. if theta is 60.
then n = 5
Comments (11)
27 Jul 2007 23:00:00 IST
Like
0 people liked this
himanshu whole day ppl thnk u and u reply back i cant imagine goiit widout u
6 Dec 2007 12:05:41 IST
Like
0 people liked this
30 nickles! ! ! ! how come so many?
may i know how many u have in total
may i know how many u have in total
4 Feb 2008 22:20:14 IST
Like
0 people liked this
hey please can u mention all the formulas.....these seems very less to be in number...
don't u think???
don't u think???
Free Sign Up!
Preparing for JEE?
Kickstart your preparation with new improved study material - Books & Online Test Series for JEE 2014/ 2015
@ INR 4,950/-
For Quick Info
|
Vertical Limit 
Top Contributors
All Time This Month Last Week | 1. |
|
Bipin Dubey
|
| 2. |
|
Himanshu
|
| 3. |
|
Hari Shankar
|
| 4. |
|
edison
|
| 5. |
|
Sagar Saxena
|
| 6. |
|
Yagyadutt Mishr..
|
| 35,229,755 Engineering Questions Attempted |
6,69,530 Visitors Monthly |
79 Engg. Exam Covered |
4061 Students Currently Online |
Connect with Us  |
 |
Vriti Communities
Privacy Policy © Vriti 2011
its a nicely composed form of optics formulae...but i think..in the 10th formulae...you must apply the condition as well...i.e if the angle
between the two mirrors is even then it is as...n = 360/theta - 1
and if the angle is odd then its like...n=360/theta.
and there is a reson behind it as well....with the even angle....we have the last image superposed at the object itself....so, we don't consider it as an object...as the image cannot be distinguished from that of the object...
rest...it seems good..
thanks...
hope this helps...and you would correct it..
keep smiling..........