CBSE Class 12-science Physics Refraction By Lens
- Derive lens formula for concave lens and state lens formula.
- Derive lens formula for concave lens and state lens formula.
- An equiconex lens of power p is cut into two equal halves by a plane perpendicular to its principal axis . The power of its halves will be ?
- please solve the question in the picture.
- The refractive index of concave lens is 1.2. This lens is immersed in a liquid of refractive index 1.4. Explain the behavior of the lens.
- Suppose a lens has different radii of curvature, it forms an image of an object placed on its axis. If we reverse the lens will the position of the image of the object change?
- There is a convex air bubble in a tank of water. State its behavior as a lens.
- A pin placed 40 cm from a lens forms an image on a screen placed at 80 cm on the other side of the lens. Determine the type of lens, focal length of lens.
- Glass of refractive index 1.55 is used to manufacture a double convex lens with the same radii of curvature R. For the focal length of lens to be 25 cm, what is the radius of curvature?
- A convex lens
behaves as converging lens when dipped in water 
whereas it behaves as diverging lens when dipped in carbon disulphide 
. Why?
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