An object is placed at a distance of 50 cm from a concave mirror . it's real and inverted image is formed at a distance of 20 cm from the mirror . calculate the focal length of the mirror.
Answers
Answered by
3
Answer:
Explanation:
u= -50 cm
v= 20 cm
1/v +1/u= 1/f
-1/50 + 1/20=1/f
(-2+5)/100=1/f
3/100=1/f
f= 33.33 cm
Similar questions