Question

You are taking a photo of your friend standing 3.5 m away with a 50 mm focal length lens camera. How far from the lens is the image formed? What is the height of the image of your friend if your friend is 1.8 m tall?

Answer 1

gens Camera Convey lens comverging ♡ Distances on the left of a lens are taken with sign. f 50 mm f Distance of objects as- 3.5m au 50Xlos 3 m F tt Let the position of image=v Lens formula ㅗ 그 I U 50X10-2 le _315m I 0.05m 3.5m = وا ממ 0:05*3-5 3.5-005

Le - 0.175 3.45 m m v= 0.051 m on the right of lens. Let height of image is = I height ut of object = 0 lom magnification m Height of image Height of objeet u Thes v и Ho O-05.1m - 3.5m I 1.8m I -0.008/ m I = B.mm minus sign shows that inverted and
Summary: I applied lens formula and magnification formula to calculate the position and height of final image.