Question

guys guys yaaro plz explain !!


explqin


only neet​

Answer 1

hi mate

preapring for NEET, great!! me tooo....

well here is you answer.....

ANSWER:

(B) both (1) & (2)

EXPLANATION:

$\frac{n_{2} }{v} - \frac{n_{1} }{u} = \frac{n_{2} - n_{1} }{R}$

here, u = -u & R = R

$\frac{n_{2} }{v} - \frac{n_{1} }{-u} = \frac{n_{2} - n_{1} }{R}$

$\frac{n_{2} }{v} = \frac{n_{2} - n_{1} }{R} - \frac{n_{1} }{u}$

if n1 > n2, $\frac{n_{2} }{v}$ = -ve

             ⇒ v = -ve

∴ so option (1) is ok

now if n2 = 2n1, $\frac{n_{2} }{v} = \frac{n_{1} }{R} - \frac{n_{1} }{u}$ = -ve if R > u

∴ option (2) is also ok

⇒Your answer therefore will be option (B) which is both (1) & (2)

hope u understood

study hard

we will crack NEET this year hopefully

If the answer helped u pls do mark as BRAINLIEST AND DO THANK ALSO

-IRKI♥♥-

Answer 2

Answer:

heya

Use formula

n2/V - n1/U = n2-n1/R

hope u got