Plese help! I am very confused about lenses Comment as to which diagram below is

Question

Plese help! I am very confused about lenses

Comment as to which diagram below is correct. Be sure to explain your reasoning and draw the principal rays on each diagram to justify this reasoning. A camera uses a converging lens to focus light on a flat, light-sensitive material (screen). Assuming the camera is perfectly focused on an object that is five times the focal length distant, describe how each of the following situations would affect the resulting photographs. Half the camera lens is covered - draw a ray diagram on the figure below to support your explanation.

Explanation / Answer

1/f = 1/u + 1/v

u = 2 f

so 1/u + 1/v = 1/f

1/2f + 1/v = 1/f

1/v = 1/f - 1/2f = 1/2f

so v = 2f

also M = - v/u M= -1.

real image then inverted,

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