Weihai film photography firm

This is a physics problem in junior high school. What about the imaging formula of thin lens?

1/u+ 1/v= 1/f

U is the object distance, the distance from the city to the lens.

V is the image distance, which is the distance between the film and the lens.

F is the focal length, which is 60 mm

U is very big. Hundreds of meters to several kilometers, so

1/v =1/f-1/u is slightly less than 1/60.

So v is slightly greater than 60mm, and the correct answer is D.

When I was a child, I won the first prize in the junior high school physics competition.