the screen of a pin hole camera is a square , of side 0.16m and it is 0.15m behind the pinhole. the camera is placed 11m from a flag staff and positioned so that the image of the flag staff is formed centrally on the screen . the image occupies three-quarters of the height of screen . what is the height of the flag staff
Answers
Answer:The side of the screen pinhole is
a
=
0.16
m
The distance from the pinhole to the screen is
d
=
0.15
m
The distance from the flag to the pinhole is
D
=
11
m
The expression of the scale factor is given by,
f
=
d
3
4
(
a
)
Substitute all the values in the above equation.
f
=
(
0.15
m
)
(
3
4
)
(
0.16
m
)
=
1.25
The expression of the height of the flag-staff is given by,
H
=
D
f
Substitute all the values in the above equation.
H
=
11
1.25
=
8.8
m
Thus, the height of the flag-staff is 8.8 m.
Explanation:Please mark me brainliest and rate me full stars and excellent also thank me
Answer:
object distance, u = 11m
image distance,v = 0.15m
hi = 3/4 × 0.16 = 0.12
ho = ?
using ho/hi = u/v
we have ho = uhi/v
ho = 11×0.12/0.15
ho = 1.32/0.15
ho = 8.8m
therefore, the height of flag staff is 8.8m