A point object O is placed on the princi...

A point object `O` is placed on the principal axis of a convex lens of focal length `f=20cm` at a distance of 40 cm to the left of it. The diameter of the lens is 10. An eye is placed 60 cm to right of the lens and a distance `h` below the principal axis. The maximum value of `h` to see the image is

2.5 cm

5 cm

10 cm

Text Solution

Verified by Experts

The correct Answer is:

In sililar triangles `AO'I` and `IJE`
`tantheta=(AO')/(40)=(JE)/(20)implies(5)/(40)=(h)/(20)`
`h=2.5cm`

Topper's Solved these Questions

REFRACTION AT SPHERICAL SURFACES
CP SINGH|Exercise EXERCISES|105 Videos
REFLECTION OF LIGHT
CP SINGH|Exercise EXERCISES|67 Videos
REFRACTION OF LIGHT BY PLANE SURFACES
CP SINGH|Exercise Exercises|110 Videos

Similar Questions

Explore conceptually related problems

Point object O is placed on the principal axis of a convex lens of focal length 20cm at a distance of 40 cm to the left of it. The diameter of the lens is 10cm to the right of the lens at a distance h below the principal axis, then the maximum value of h to see the image will be

A point object is placed on the optic axis of a convex lens of focal length f at a distance of 2f to the left of it. the diameter of the lens is 'd' . An eye is placed at a distance of 3f to the right of the lens and a distance h below the optic axis. The maximum value of h to see the image is

A point object is placed on the optic axis of a convex lens of focal length f at a distance of 2f to the left it. The diameter of the lens d. An eye is placed are distance of 3f to the right of the lens and a distance below the optic axis. The maximum value of h to the image is

A 5 cm tall object is placed on the principal axis of convex lens of focal length 50 cm at a distance of 40 cm from it. Find the nature, position and size of the image.

A small pin of size 5 mm is placed along principal axis of a convex lens of focal length 6cm at a distance 11cm from the lens. Find the size of image of pin. [7.2 mm]

An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm . A real image is formed at a distance of 75 cm from the lens. The size of the image will be

CP SINGH-REFRACTION AT SPHERICAL SURFACES-EXERCISES

Diameter of a plano-convex lens is 6cm and thickness at the centre is ...
Text Solution
|
An object is placed at a distance x1 from the principal focus of a len...
Text Solution
|
A point object O is placed on the principal axis of a convex lens of f...
Text Solution
|
An illuminated object is placed on the principal axis of a converging ...
Text Solution
|
A split lens has its two parts separated by a and its focal length is ...
Text Solution
|
When a biconvex lens of glass having refractive index 1.47 is dipped i...
Text Solution
|
A convex lens if in contact with concave lens. The magnitude of the ra...
Text Solution
|
Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...
Text Solution
|
Two similar planoconvex lenses are combined together in three differen...
Text Solution
|
A convex lens of focal length 40 cm a concave lens of focal length 40 ...
Text Solution
|
Two thin lenses of powers 2D and 3D are placed in contact. An object i...
Text Solution
|
A real image is formed by a convex lens. If we put a concave lens in c...
Text Solution
|
A beam of parallel rays is brought to focus by a planoconvex lens. A t...
Text Solution
|
A concave lens and a convex lens have same focal length of 20 cm and b...
Text Solution
|
A bi-convex lens is formed with two thin plano-convex lenses as shown ...
Text Solution
|
The size of the image of an object, which is at infinity, as formed by...
Text Solution
|
Choose the correct option regarding lenses in contact.
Text Solution
|
A paralel beam of light incident on a concave lens of focal length 10 ...
Text Solution
|
A convex lens A of focal length 20 cm and a concave lens B of focal le...
Text Solution
|
Two convex lenses of focal length f1 and f2 are mounted coaxially sepa...
Text Solution
|