Mirror formula

[@hasinivivek7662]

Thank you so much! Y'all are LIFESAVERS

[@kofikester4398]

In some text books the focal length in concave is positive...Is it also wrong

[@satyavani6288]

thank you khan academy ! you are the best of all

[@petromyzontida.]

can you send me the link of playlist?

[@mohamedbaqir8999]

Love you man in explaining......

[@oikawaspeach_7165]

Amazing work sir!!

[@godwingeorge7310]

u da goat bro

[@mohamedbaqir8999]

Amamzinggg

[@mohamedbaqir8999]

Superr

[@mallamadhuri7681]

Ilove khan academy

[@mohamedbaqir8999]

Woowwwww

[@mohamedbaqir8999]

Perfecttttttt

[@mallutravelersupport7240]

Mahesh sir is an old old man...I thought he was young by hearing his sound.

[@mallutravelersupport7240]

Please don't hide this comment. Let everyone know this 👹👹👹👹👹👹👹👹👹👹👹👹👹👹👹👹👹

[@skguptakavitashilp4990]

He is around 40. And not an old old man.