Define the principal axis of a lens....

Define the principal axis of a lens.

Text Solution

Verified by Experts

Principal axis: A line joining the centre of curvature of two refracting spherical surfaces of a lens is known as principal refraction.

Topper's Solved these Questions

REFRACTION OF LIGHT
BETTER CHOICE PUBLICATION|Exercise MOST EXPECTED QUESTIONS|2 Videos
REFRACTION OF LIGHT
BETTER CHOICE PUBLICATION|Exercise SHORT ANSWER TYPE QUESTIONS|19 Videos
REFLECTION OF LIGHT
BETTER CHOICE PUBLICATION|Exercise NUMERICALS PROBLEMS|7 Videos
SEMI CONDUCTOR DEVICES
BETTER CHOICE PUBLICATION|Exercise Most Expected Questions|6 Videos

Similar Questions

Explore conceptually related problems

An equiconvex lens with radii of curvature of magnitude R each,is put over a liquid layer poured on top of a plane mirror.A small needle ,with its tip on the principal axis of the lens,is moved along the axis until its inverted real image coincides with the needle itself.The distance of the needle from the lens is measured to be a as shown in Fig.2.53. On removing the liquid layer and repeating the ezperiment,the distance is found to be b as shown in Fig.254 .Gien that tow values of distances meeawured reepresent the focal length values in the two cases, obtain a formula for the refractive index of the liquid. .

Define the principal focus of concave mirror.

Define principle axis of a spherical mirror.

The figure TBQ 9.38 shows an equiconvex lens (of refractive index 1.50) in contact with a liquid layer on top of a plane mirror. A small needle with its tip on the principal axis is moved along the axis until its inverted images if found at the positions of hte needle. The distance of the needle from the lens is measured to be 45.0 cm. The new distane is measured to be 30.0 cm. What is the refractive index of the liquid?

A mobile phone lies along the princip axis of a concave miror.Show,with the help of a suitable diagram,the rformatrion of its image.Explain,wy magnification isnot uniform.

BETTER CHOICE PUBLICATION-REFRACTION OF LIGHT-NUMERICAL PROBLEMS

Define the principal axis of a lens.
Text Solution
|
A convex lens of refractive index 1.5 has a focal length of 18 cm in a...
Text Solution
|
The radii of curvature of a convex lens are 20 cm and 30 cm nd the re...
Text Solution
|
A glass (mu=1.5) convex lens of focl length 40 cm is placed in water (...
Text Solution
|
A convex lens of foal length 30 cm and a concave lens of focal length ...
Text Solution
|
A small black dot is made on the surface of a glass sphere (mu=1.5) an...
Text Solution
|
Two lenses of powers +4 D and -14 D form a combination.If a 2 cm size ...
Text Solution
|
A spherical refrativng suurface of denser medium (mu=1.5) is placed in...
Text Solution
|
A convex lens of power 4 D is combined with a other lens. For an objec...
Text Solution
|
A equiconvex lens of focal length 30 cm is divided into two equal halv...
Text Solution
|
A equiconvex lens of focal length 30 cm is divided into two equal halv...
Text Solution
|
A double convex lens of focal length 25 cm is divided into two equal h...
Text Solution
|
A 5.0 cm long needle is placed vertically at a distance 20 cm in front...
Text Solution
|
A 5.0 cm long needle is placed vertically at a distance 20 cm in front...
Text Solution
|
A 5.0 cm long needle is placed vertically at a distance 20 cm in front...
Text Solution
|
A ray of light of frequency of 5 xx 10^(14)Hz is passed through a liqu...
Text Solution
|
A ray of monochromatic light travelling in vacuum with speed c ,wavele...
Text Solution
|
For the same angle of incidence,the angles of refraction in three diff...
Text Solution
|
Two lenses, one diverging of power 2D and the other converging of powe...
Text Solution
|
The radii of curvature of the faces of a double convex lens are 20 cm ...
Text Solution
|
A convex lens has 10 cm focal length in air. What is its focal length ...
Text Solution
|