1061) dont remember formulae blindly.. try deriving them look at what assumptions have been taken to derive a formula .. (for ths particular case, derivation is der in HCV) (here it wont be valid)
3) it is the opposite. when the image is real, the paper burns.. when it is virtual it will never burn if the paper is placed there as no light ray reaches that position.
4) not necessarily as the convergence/divergence of a parallel beam depends on
(i) material of lens
(ii) material of surrounding medium
11What about my second question? [2]
712) Can there be a situation in which a light ray passes through a prism undeviated?
NO.? :P
11
Khyati
·2010-10-19 10:53:13
@ Vivek,
grazing incidence mein hota hai, when the ray of light falls perpendicular to the
surface of the prism
1yes there can be a situation when ray of light passes through a prism undeviated , other than which khyati told....
11
Khyati
·2010-10-20 09:18:17
@ Nihal tell those other situations too Please [1]
1
redion
·2010-11-21 04:46:50
@ khyati, grazing incidence is a case of maximum deviation!! light ray can pass undeviated if the refractive index of prism is same as that of the medium in which incident beam is present
for ques 4 plz. specify the size of the tube bcoz. we can also consider the open end as a point source ( Huygen's principle)
11
Khyati
·2010-11-21 05:58:22
I have written the question as it is, no where is tube size is mention