what is the focal length of a concave mirror ? is it positive or negative? explanation please
laharipragna:
answer it fast
please…...…
Answers
Answered by
0
Hi friend
The focal length of a concave mirror should be calculated and it isn't constant and it's the actual length between the image sensor and the concave mirror.
The focal length is always positive in case of concave mirror.
Hope this helps you
The focal length of a concave mirror should be calculated and it isn't constant and it's the actual length between the image sensor and the concave mirror.
The focal length is always positive in case of concave mirror.
Hope this helps you
for a concave mirror i think the focal length is negative
Nope it's positive
Convex only negative
no its negative
we measure the focal length opposite to the direction of incident ray so it is negative
But it's positive yaar
I checked now also
where
Wait
but it is negative yaar
Answered by
2
the focal length of the concave mirror is negative
----------------------------
the distance is always measured from the pole and the incident ray is travelling opposite to the direction from which the length is measured , therefore it will be negative
if the measuring direction is same is the incident ray direction , it will be positive
----------------------------
the distance is always measured from the pole and the incident ray is travelling opposite to the direction from which the length is measured , therefore it will be negative
if the measuring direction is same is the incident ray direction , it will be positive
Similar questions