in an experiment ,the image of a distant object formed by a concave mirror is obtained on a screen, to determine the focal lenght of the mirror you need to measure the distance between the.......
a)mirror and screen b) mirror and object c) object and screen d) mirror and the screen also between the object.
i think d is the correct answer...however explain the correct answer.?
Answers
Answered by
26
Heya
It is a distant object
So we can consider the image distance as infinity
Rays from a distant object are parallel. When they hit a concave mirror, they converge to a point known as the focus.
The image of that distant object can be obtained on the screen if placed at the focus.
The distance between the mirror and screen gives us the focal length of the mirror.
Here we don't need to know the distance between the screen and the object.
Option A is the right one.
Hope it helps!
It is a distant object
So we can consider the image distance as infinity
Rays from a distant object are parallel. When they hit a concave mirror, they converge to a point known as the focus.
The image of that distant object can be obtained on the screen if placed at the focus.
The distance between the mirror and screen gives us the focal length of the mirror.
Here we don't need to know the distance between the screen and the object.
Option A is the right one.
Hope it helps!
Answered by
1
Answer:
(d) Mirror and the screen also between the object.
Explanation:
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