An achromatic combination of lenses is formed by joining...

2 convex lenses

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2 concave lenses

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1 convex and 1 concave lens

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1 convex and 1 plane mirror

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Solution

The correct option is C 1 convex and 1 concave lens
For an achromatic combination $\frac{ω_{1}}{f_{1}} + \frac{ω_{2}}{f_{2}} = 0$
i.e. $1$ convex lens and $1$ concave lens.

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Similar questions

Q. An achromatic combination of concave and convex lens has power

5

D. If the power of convex lens is

4

D, then the magnitude of focal length of concave lens is?

Question 7

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

(a) both concave lens and convex lens.

(b) both concave mirror and convex mirror.

(d) Both convex mirror and concave lens.

Question 4

You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

(a) concave mirror or convex mirror.

(b) concave mirror or convex lens.

(d) concave lens or convex lens.

Why focal length of convex mirror and convex lens is positive while concave mirror and concave lens negative?

Q. The magnification produced by a spherical lens and a spherical mirror is + 2.0.
(a) The lens and mirror are both concave
(b) The lens and mirror are both convex
(c) The lens is convex but the mirror is concave
(d) The lens is concave but the mirror is convex

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An achromatic combination of lenses is formed by joining...

The correct option is C 1 convex and 1 concave lensFor an achromatic combination ω1f1+ω2f2=0i.e. 1 convex lens and 1 concave lens.

The correct option is C 1 convex and 1 concave lens
For an achromatic combination $\frac{ω_{1}}{f_{1}} + \frac{ω_{2}}{f_{2}} = 0$
i.e. $1$ convex lens and $1$ concave lens.