Question

plz solve with full solution...

i request u pple any one here preparing for neet then plz imbox me i need help​

Answer 1

Answer: option 1

 

focal length of lens  in liquid /focal length of lens in air  =(refractive index of lens with respect  to air  -1 )/ (refractive index of lens with respect to liquid -1)

substitute all the values and signs (properly)

so answer is option 1

Explanation:

Answer 2

Answer:

(a) 5/3

Explanation:

pls find the attachment

best of luck for your NEET :)