What is the power of combination of convex lens and concave lens of the same focal length?

What is the power of combination of convex lens and concave lens of the same focal length?

The power will be zero because focal length is same but they will be opposite in magnitude.

What are two devices that use combination of concave and convex lens?

Answer: Telephoto Lenses Are Combinations of Convex and Concave Lenses.

What is the advantage of combined effect of two lenses?

1. Spherical and chromatic aberrations are taken care of. 2. Magnification is also improved.

Why are concave mirror and convex lens considered both converging while convex mirror and concave lens are diverging?

Light reflects from a mirror. A concave mirror converges light to a focal point. For lenses, light converges to a point for a convex lens. A convex mirror diverges light, as does a concave lens.

What is the use of combination of lenses?

Combination of lenses is used in various optical instruments because: (i) To increase the magnification of the image. (ii) To increase the sharpness of the image. (iii) To make the final image erect.

What does a combination of a convex lens of power +2D and a concave lens of power behave as?

The combination of a convex lens of power +2D and a concave lens of power -2D, acts as a. convex lens of power 0 D.

What is the power of a combination of lenses?

The power of combination of lenses would be the algebraic sum of the powers of the individual lenses.

Where do we use a concave lens and a convex lens in daily life?

Concave lenses are used in glasses to correct the nearsightedness or myopia. In lasers, small concave lenses are used to widen the laser beam. Camera manufacturers use concave lenses in combination with convex lenses to improve the quality of photographs.

What is combination of lens?

Combination of lenses. When two lenses are used in combination, the first one forms an image that then serves as the object for the second lens. The magnification of the combination is the ratio of the height of the final image to the height of the object. This is the final image produced by the combination of lenses.