Question

Q. Focal length of the concave lens, concave mirror is negative or positive ? NOTE- I am asking this because in NCERT ( CLASS 10TH PG-185 Q4 MCQ) both are negative but on google f of concave mirror is positive but f of concave lens is negative. PLZZ HELP ME ASAP-----

Answer 1

Answer:

Negative

Explanation:

the reflex angle of the concave lens thatswhy

Answer 2

Answer:

Dude search in google google have every single answer of your question