An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.
Answers
Answered by
2
Answer:
focal length = 7.14 cm
Step-by-step explanation:
h1 = 50 cm
h2 = -20 cm (real image)
v = 10 cm
m = v/u = h2/h1
10/u = -20/50
u = -25 cm
1/v – 1/u = 1/f
1/10 – 1/-25 = 1/f
f = 50/7 = 7.14 cm
Answered by
0
Answer:
this is your answer
Mai Kuch BAAT karana cahata hu send message on this number 8750713077
don't make joke
Attachments:
Similar questions