An object is kept 15 cm in front of a co...

An object is kept 15 cm in front of a concave lens of focal length 20 cm. If the object is moved by 3 cm towards the lens, by what factor will the magnifiation change ?

20/19

`3//5`

35/32

`9//5`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

LIGHT - REFLECTION AND REFRACTION
ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA|34 Videos
LIGHT - REFLECTION AND REFRACTION
ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (SHORT ANSWER [SA] TYPE - I QUESTIONS)|28 Videos
LIGHT - REFLECTION AND REFRACTION
ZEN PUBLICATION|Exercise QUESTIONS SECTION (TEXTUAL EXERCISE)|34 Videos
ELECTRICITY
ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE CHOICE QUESTIONS)|60 Videos
MAGNETIC EFFECTS OF ELECTRIC CURRENT
ZEN PUBLICATION|Exercise Additional question section (Higher-order thinking skills [HOTS] questions)|20 Videos

Similar Questions

Explore conceptually related problems

The power of a concave lens of focal length 50 cm is :

An object of size 3.0cm is placed 14cm in front of a concave lens of focal length 21cm. Describe the image produced by the lens. What happens if the object is moved further away from the lens?

A point object is placed at a distance of 12 cm on the axis of a convex lens of focal length 10 cm. On the other side of the lens, a convex mirror is placed at a distance of 10 cm from the lens such that the image formed by the combination coincides with the object itself. What is the focal length of convex mirror ?

The combination of a convex lens and a concave lens each of focal length 10 cm acts like a :

An object is placed 12 cm to the left of a converging lens of focal length 8 cm . another converging lens of 6cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce

ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE - CHOICE QUESTIONS)

The power of a spherical lens is given by :
Text Solution
|
When a concave lens made of glass is kept in a liquid which has greate...
Text Solution
|
An object is kept 15 cm in front of a concave lens of focal length 20 ...
Text Solution
|
The nature and size of an object placed focus F(1) of a convex lens is...
Text Solution
|
The power of a concave lens of focal length 50 cm is :
Text Solution
|
u, v, f and r represents the object distance, image distance, focal le...
Text Solution
|
When light goes from one medium to another, the characteristics that r...
Text Solution
|
Reflective index of glass with respect to air is 3/2. What is the refr...
Text Solution
|
When a light ray travels from one medium to another with the same refr...
Text Solution
|
The relation between refractive index of a medium (mu) in terms of vel...
Text Solution
|
The bending of a light ray due to change in velocity of light as the m...
Text Solution
|
To form an image twice the size of the object, using a convex lens of ...
Text Solution
|
The combination of a convex lens and a concave lens each of focal leng...
Text Solution
|
A dentist uses a concave mirror to examine the teeth. The position of ...
Text Solution
|
In the figure, AB is an object of height 2 cm. The position and height...
Text Solution
|
Concave mirrors are used as reflectors in the headlights of vehicles, ...
Text Solution
|
Which of these is true about the value of linear magnification (|m|) o...
Text Solution
|
The refractive index of a given pair of media is independent on which ...
Text Solution
|
A student has obtained a point image of a distant object using a conve...
Text Solution
|
In the incomplete ray diagram given below, the object AB would be at t...
Text Solution
|