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Converging lens...

Converging lens

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The lens which converges the light incident on it is called converging lens.
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A magnifying glass is a converging lens placed close to the eye. A farsighted person uses spectacles having converging lenses. Compare the functions of a converging lens used as a magnifying glass and as spectacles.

A diverging lens of focal length 20 cm and a converging lens of focal length 30 cm are placed 15 cm apart with their principal axes coinciding. Where should an object be placed on the principal axis so that its image formed at infinity ?

The magnifying power of a converging lens used as a simple microscope is (1+D/f) . A compound microscope is a combination of two such converging lenses. Why don't we have magnifying power (1+D/f_0)(1+D/f_e) . In other words, why can the objective not be treated as a simple microscope but the eyepiece can?

A card sheet divided into squares each of size 1 mm^(3) viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 9 cm ) held close to the eye. a. What is the magnification produced by lenas ? How much is the area of each square in the virtual image ? b. What is the angular magnification (magnifying power ) of the lens ? c. Is the magnification in (a) equal to the magnifying power in (b)? explain.

What is the focal length of a convex lens of focal length 30 cm in contact with a concave lens of focal length 20 cm? is the system a converging or a diverging lens ? Ignore thickness of the lenses.

Convex lens: Converging :: Concave lens: ………….

A thin converging glass lens made of glass with refractive index 1.5 has a power of +5.0 D. When this lens is immersed in a liquid of refractive index n, it acts as a divergent lens of focal length 100 cm. What must be the value of n?

A thin converging glass lens made of glass with refractive index 1.5 has a power of + 5.0 D. When this lens is immersed in a liquid of refractive index n, it acts as a divergent lens of focal length 100 cm. What must be the value of n?

A thin converging glass lens made of glass with refractive index 1.5 has a power of +5.0 D. When this lens is immersed in a liquid of refractive index n, it acts as a divergent ans of focal length 100 cm. What must be the value of n?

Concave lens is also called as diverging lens.

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