a-pinhole-camera-is-placed-300cm-in-front-of-a-building-so-that-the-image-is-formed-on-a-screen-5cm-from-the-pin-hole-if-the-image-is-2-5cm-high-the-height-of-the-building-will-be-

Question Number 132900 by aurpeyz last updated on 17/Feb/21

a p i n h o l e c a m e r a i s p l a c e d 300 c m

i n f r o n t o f a b u i l d i n g s o t h a t t h e i m a g e

i s f o r m e d o n a s c r e e n 5 c m f r o m t h e

p i n h o l e . i f t h e i m a g e i s 2.5 c m h i g h .

t h e h e i g h t o f t h e b u i l d i n g w i l l b e ?

Commented by mr W last updated on 17/Feb/21

s u p p o s e d y o u {d o n}^{'} t m e a n a r e a l

b u i l d i n g f o r h u m a n, b u t a d o g h o u s e .

\frac{x}{300} = \frac{2.5}{5}

\Rightarrow x = 150 c m

t h e h e i g h t o f d o g h o u s e i s 150 c m .

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