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WHAT HAPPENS TO THE FOCAL LENGTH OF A CONCAVE MIRROR AS THE CURVATURE OF THE MIRROR IS INCREASED?
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Do concave lenses have negative focal length?
Basically because, in a convex mirror, the curvature is the opposite of that of a concave mirror. It's bevaviour is opposite, too: incoming light is spread out, instead of being focussed.
What is the relation of focal length of eye with its curvature?
More the curvature of the eye lens, lesser the focal length is. Lesser the curvature, greater the focal length is
What happens to images that are closer to a concave mirror than the focal length?
The image is upright and magnified/enlarged.
What is Focal length of a concave mirror?
It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.
How can a rough value of the focal length of a concave mirror be obtained?
rough focal length of concave mirror
What is the relation between focal length and center of curvature?
The focal length of a concave mirror is about equal to half of its radius of curvature.
If the focal lenght of a concave mirror is 15 cm find the radius of curvature?
The radius of curvature and the focal length mean the same so the radius of curvature is also 15 cm.
Why the focal length of concave mirror changes in water?
I don't think so. The focal length would remain the same. It mainly depends on the radius of curvature of the mirror.
Do concave lenses have negative focal length?
Basically because, in a convex mirror, the curvature is the opposite of that of a concave mirror. It's bevaviour is opposite, too: incoming light is spread out, instead of being focussed.
What is the relation of focal length of eye with its curvature?
More the curvature of the eye lens, lesser the focal length is. Lesser the curvature, greater the focal length is
How do you find radius of curvature if focal length is given?
radius of curvature = 2Focal length
Will the focal length of concave lens change in water?
no, because this happens only in the cases of lenses
Light from a star is collected by a concave mirror How far from the mirror is the image of the star if the radius of curvature is 150 cm?
The image of the star will be 67.5 cm from the mirror because focal length is the raidus of curvature multiplied by 2 or (2)(C). So, therefore, 150 / 2 will give the focal length which would also be the answer.
How does thickness of convex lens affect focal length?
The focal length of a lens depends on 1. The refractive index of the material 2. Radii of the curvature of the two faces. The lens maker's formula is 1/f = (mu --1) (1/R1 --1/R2) mu- the refractive index of the material with which lens is made R1 and R2 are the radii of curvature of the faces. f- the focal length of the lens thus formed. your question needs clear information. As the thickness of the lens of same diameter is increased then radii of curvature would decrease, hence focal length would decrease. But as the diameter gets increased then there comes a chance of maintaining the radii of curvature to be the same. If so, then no change in the focal length. But, if diameter is not increased to the right extent then we cannot be sure about the variation of focal length.
What happens to images that are closer to a concave mirror than the focal length?
The image is upright and magnified/enlarged.
What is Focal length of a concave mirror?
It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.
What is the Focal length of a concave mirror?
It is the point , on the central axis, where light, that is parallel to the central axis, passes thru after it is reflected from the mirror. It is also at a distance from the mirror equal to twice the radius of curvature of the mirror.
