Refraction by spherical lenses

Posted on August 11, 2016 by Mrs Shilpi Nagpal

Question 1 What is a lens?

Question 2 How many type of lens are them?

Question 3 What is a convex lens?

Question 4 What is a concave lens?

Question 5 Draw Bi-convex, plane-convex and concavo-convex lens?

Question 6 Draw Bi-concave, plane-concave and convexo-concave lens?

Contents

1 Refraction by Spherical Lenses
- 1.1 Types of lenses
  - 1.1.1 (1) Convex or converging
  - 1.1.2 (2) Concave or diverging
2 Convex Lens
3 Concave lens

Refraction by Spherical Lenses

Lens is a transparent medium bounded by two refracting surfaces.

Types of lenses

(1) Convex or converging

(2) Concave or diverging

Convex Lens

A lens having both spherical surface or one spherical and other plane surface.

It is thick in the middle and thin at the edges.

They are of 3 types:

(a) Bi-convex

(b) Plane-convex

(c) Concavo-convex

Concave lens

(a) Bi-concave

(b) Plane-concave

(c) Convexo-Concave

About Mrs Shilpi Nagpal

Mrs. Shilpi Nagpal is a post-graduate in Chemistry and an experienced tutor who has been teaching students since 2007. She specialises in tutoring science subjects for students in grades 6-12. Mrs. Nagpal has a proven track record of success, and her students have consistently achieved better grades and improved test scores. She is articulate, knowledgeable and her passion for teaching shines through in her work with students.

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