हिंदी

Consider two statements A and B given below:A : real image is always invertedB : virtual image is always erectOut of these two statements:

Advertisements
Advertisements

प्रश्न

Consider two statements A and B given below:
A: real image is always inverted
B:  virtual image is always erect
Out of these two statements:

विकल्प

  • Only A is true

  • Only B is true

  • Both A and B are true

  • None is true

MCQ
Advertisements

उत्तर

both A and B are true

A real image is always inverted and a virtual image is always erect.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Reflection of Light - Exercise 6 [पृष्ठ २०७]

APPEARS IN

लखमीर सिंग Physics [English] Class 10
अध्याय 1 Reflection of Light
Exercise 6 | Q 36 | पृष्ठ २०७

संबंधित प्रश्न

 A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object? Also, find the power of the lens.


Give the usual name for the following:
A point inside a lens through which the light passes undeviated.


Which type of lens has (a) a positive power, and (b) a negative power?


What is the power of a convex lens of focal length 0.5 m?


What is the nature of a lens having a power of + 0.5 D?


Fill in the following blank with suitable word: 

For converging lenses, the power is __________ while for diverging lenses, the power is ___________.


How is the sign (+ or -) of power of a lens related to its divergent or convergent action?


On reducing the focal length of a lens, its power ______.


The power of a lens is + 1.0 D is : 


A symmetric double convex lens is cut in two equal parts by a plane containing the principal axis. If the power of the original lens was 4 D, the power of a divided lens will be


Surabhi from std. X uses spectacle. The power of the lenses in her spectacle is 0.5 D.

Answer the following questions from the given information:

  1. Identify the type of lenses used in her spectacle.
  2. Identify the defect of vision Surabhi is suffering from.
  3. Find the focal length of the lenses used in her spectacle.

A convex lens is of focal length 20 cm. Find its power.


Focal length : metre : : power of lens : _______


If focal length of a convex lens is 20 cm at what is the power of the lens?


Power of a lens is – 4D, then its focal length is


Increase in the converging power of eye lens cause ‘hypermetropia'


The above lens has a focal length of 10 cm. The object of height 2 mm is placed at a distance of 5 cm from the pole. Find the height of the image.


Define power of a lens. What is its unit? One student uses a lens of focal length 50 cm and another of –50 cm. What is the nature of the lens and its power used by each of them?


A point object is placed at O in front of a glass sphere as shown in figure.

Show the formation of the image by the sphere.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×