Respuesta :
1/S' + 1/S = 1/f
-1/4 +1/S = 1/5
S = 20/9 mm = 2.22 mm
1/v-1/u=1/f
So
1/(-4)-1/u=1/5
So
v=-2.22mm in front of lens as we are getting same sign as that for image i.e negative
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The object of this image will be formed in front of lens with object distance v of -2.22 mm.
1/S' + 1/S = 1/f
-1/4 +1/S = 1/5
S = 20/9 mm = 2.22 mm
1/v-1/u=1/f
So
1/(-4)-1/u=1/5
So
v=-2.22mm in front of lens as we are getting same sign as that for image i.e negative.
- Concave lenses or diverging lenses divert light rays, whilst convex lenses or converging lenses focus light rays to a particular spot. In accordance with the laws of refraction, a lens is a transparent substance with a flat or curved surface.
- Positive, or converging, narrow lenses combine incident light rays that are parallel to the optical axis and focus them at the focal plane to create a true image.
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