Answer question 4 with proper steps Q-4) The power of a combination of two lenses XY is 5D - Science - Light - Reflection and Refraction

Question

Answer question 4 with proper steps

Q-4) The power of a combination of two lenses XY is 5D if the focal
length of the lens X is 15 cm State the nature and focal length of
lens Y

Decoder_2 · Accepted Answer

Dear student,fnet=1P=15=0
2m=20cm1fnet=1fx+1fy120=115+1fy1fy=120-115fy=-60cm(concave)Regards

Answer question 4 with proper steps. Q-4) The power of a combination of two lenses XY is 5D if the focal length of the lens X is 15 cm. State the nature and focal length of lens Y.