16 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.ah
lemme pull out microsoft paint rq
Radius of illumination right?
the red ray of light is where total internal reflection happens
yes
"all the rays coming out of water" i.e. all the rays till where total internal reflection doesnt happen
since you're given the refractive index of water, you can figure out the critical angle between water and air
Okk
and then do geometry, basically
to figure out the radius
Idk why in exam I thought they were trying to make a lens 💀 💀 💀 💀
lmfaoo
its worded very
oddly
Yeah
I think I solved it
like only the people who knew this before would be likely to figure it out
bet
Thanks man
npnp
+solved @banana
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