A waitperson carrying a tray with a platter on it tips the tray at an angle of 12° below the horizontal. If the gravitational fo
1 answer:
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Answer:
<h2> 48kg</h2>Explanation:
Answer:
44.755 m
Explanation:
Given:
Height of the movie star, H = 1.75 m = 1750 mm
Height of the image, h = - 8.25 mm
Focal length of the camera = 210 mm
Let the distance of the object i.e the distance between camera and the movie star be 'u'
and
distance between the camera focus and image be 'v'
thus,
magnification, m =
also,
m =
thus,
or
or
....................(1)
now, from the lens formula
on substituting value from (1)
or
or
u = 210 × ( 1 + 212.12 )
or
u = 44755.45 mm
or
u = 44.755 m