Calculate the focal length of a reading ...

Calculate the focal length of a reading glass of a person, if the distance of distinct vision is 75cm.

75.2 cm

25.6 cm

100.4 cm

37.5 cm

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

RAY OPTICS
TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos
RAY OPTICS
TARGET PUBLICATION|Exercise CRITICALTHINKING|34 Videos
MEASUREMENTS
TARGET PUBLICATION|Exercise EVALUATION TEST|17 Videos
REFRACTION OF LIGHT
TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos

Similar Questions

Explore conceptually related problems

The least distance of distinct vision is

A magnifying glass is a combination of lenses of powers +20 D and -5 D . Calculate the magnifying power of the microscope, if the distance of distinct vision is 25 cm. Also, calculate the size of an object 3 cm high seen through the magnifying glass.

The magnifying power of a simple microscope is 6. The focal length of its lens in metres will be, if least distance of distinct vision is 25cm

A magnifying glass is a combination of a convex lens of focal length 5 cm and a concave lens of power - 5D. If the distance of distinct vision 20 cm, calculate the magnifying power of the magnifying glass.

A magnifying glass of focal length 5cm is used to view an object by a person whose smallest distance of distinct vision is 25cm. If he holds the glass close to eye, then the magnification is

A telescope has an objective of focal length 50cm and an eyepiece of focal length 5cm. The least distance of distinct vision is 25cm. The telescope is focused for distinct vision on a scale 2m away from the objective. Calculate (a) magnification produced and (b) separation between objective and eyepiece.

The maximum magnification that can be obtained with a convex lens of focal length 2.5 cm is (the Ieast distance of distinct vision is 25 cm).

Convex lens of focal length f is used as simple microscope. D is the least distance for distinct vision.

TARGET PUBLICATION-RAY OPTICS-COMPETITIVE THINKING

The equiconvex lens has focal length f. If is cut perpendicular to the...
Text Solution
|
A converging beam of rays in incident on a diverging lens. Having pass...
Text Solution
|
Calculate the focal length of a reading glass of a person, if the dist...
Text Solution
|
A beam of parallel rays is brought to focus by a planoconvex lens. A t...
Text Solution
|
A plano-convex lens fits exactly into a plano-concave lens. Their plan...
Text Solution
|
Two lenses of power +12 and -2 dioptres are placed in contact. The com...
Text Solution
|
A comvex lens and a concave lens are placed in contact. The ratio of m...
Text Solution
|
Two identical glass (mu(g)=3//2) equiconvex lenses of focal length f a...
Text Solution
|
Two convex lenses of focal length f1 and f2 are mounted coaxially sepa...
Text Solution
|
A diverging lens with magnitude of focal length 25 cm is placed at a d...
Text Solution
|
A convex lens of focal length 12.5 cm is used as a simple microscope. ...
Text Solution
|
Least distance of distinct vision is 25 cm . Magnifying power of simpl...
Text Solution
|
In compound microscope, the focal length and aperture of the objective...
Text Solution
|
In a compound microscope, the intermediate image is
Text Solution
|
A compound micrscope consists of an objective of focal length 1.0 cm ...
Text Solution
|
An obsever looks at a distant tree of height 10m with a telescope of m...
Text Solution
|
An astronomical telescope has an angular magnification of magnitude 5 ...
Text Solution
|
On which of the following does the magnifying power of a telescope dep...
Text Solution
|
The number of lenses in a terrestrial telescope is
Text Solution
|
To avoid spherical aberration, quality reflecting telescopes use mirro...
Text Solution
|