Your friend is 1.5 m tall. Part A When she stands 3.5 m from you, what is the he

Question

Your friend is 1.5m  tall.

Part A When she stands 3.5m  from you, what is the height of her image formed on the retina of your eye? (Consider the eye to consist of a thin lens 2.5 cm from the retina.)

Part B What is the height of her image when she is 4.4m  from you?         
Your friend is 1.5m  tall.

Your friend is 1.5m  tall.

Your friend is 1.5m  tall.

Part A When she stands 3.5m  from you, what is the height of her image formed on the retina of your eye? (Consider the eye to consist of a thin lens 2.5 cm from the retina.)

Part B What is the height of her image when she is 4.4m  from you?         
Part B What is the height of her image when she is 4.4m  from you?         

Explanation / Answer

i think height of girl is missing ...

if 1.9is height of girl then

a) 1.9/(3.5m/0.025m) = 1.9/140m.=0.0135m, or 1.35 cm.
b) X/(4.5m/0.025m)= 1.9/180m.=0.0105m=1.05cm

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