English

What Type of Lens is Used to Correct Hypermetropia - Science

Advertisements
Advertisements

Question

What type of lens is used to correct  

hypermetropia

Solution

 Convex lenses are used to correct hypermetropia.

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: The Human Eyes And The Colorful World - Exercise 2 [Page 279]

APPEARS IN

Lakhmir Singh Physics (Science) [English] Class 10
Chapter 6 The Human Eyes And The Colorful World
Exercise 2 | Q 4.2 | Page 279

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

To determine the approximate focal length of the given convex lens by focussing a distant object (say, a sign board), you try to focus the image of the object on a screen. The image you obtain on the screen is always

(a) erect and laterally inverted

(b) erect and diminished

(c) inverted and diminished

(d) virtual, inverted and diminished


If an object is placed at the focus of a convex lens, where is the image formed?


Three convex lenses are available having focal lengths of 4 cm, 40 cm and 4 m respectively. Which one would you choose as a magnifying glass and why? 

 


In order to obtain a real image twice the size of the object with a convex lens of focal length 15 cm, the object distance should be:

(a) more than 5 cm but less than 10 cm
(b) more than 10 cm but less than 15 cm
(c) more than 15 cm but less than 30 cm
(d) more than 30 cm but less than 60 cm


Describe the nature of image formed when an object is placed at a distance of 30 cm from a convex lens of focal length 15 cm.


A convex lens is placed in water. Its focal length will ______.


The focal length of a thin convex lens is ______ than that of a thick convex lens.


State the position of object, position of image, nature of image when: Convex lens is used in cine projector.


In sunglasses, both of its surfaces are curved, yet their behaviour is neither like a convex lens nor like a concave lens. State the reason.


We can burn a piece of paper by focussing the sun rays by using a particular type of lens. Name the type of lens used for the above purpose. Draw a ray diagram to support your answer.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×