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A Convex Lens Forms an Inverted Image of Size Same as that of the Object Which is Placed at a Distance 60 Cm in Front of the Lens. Find: - Physics

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प्रश्न

A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens. Find: The position of image

एक पंक्ति में उत्तर

उत्तर

A convex lens forms an inverted, real, and an image of the same size as the object when the object is placed at 2f, i.e. (u = 2f).

In such cases, the image is formed at the point which is double the focal length on the other side of the lens (2f2).

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अध्याय 5: Refraction through a Lens - Exercise 5 (C) 2 [पृष्ठ १२७]

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सेलिना Physics [English] Class 10 ICSE
अध्याय 5 Refraction through a Lens
Exercise 5 (C) 2 | Q 9.1 | पृष्ठ १२७

संबंधित प्रश्न

A student focuses the image of a well-illuminated distant object on a screen using a convex lens. After that, he gradually moves the object towards the lens and each time focuses its image on the screen by adjusting the lens.

(i) In which direction, towards the screen or away from the screen, does he move the lens?

(ii) What happens to the size of the image? Does it decrease or increase?

(iii) What happens to the image on the screen when he moves the object very close to the lens?


Which of the following lenses would you prefer to use while reading small letters found in a dictionary?


For what position of an object a real, diminished image is formed by a convex lens?


Draw a ray diagram to show the formation of a real magnified image by a convex lens. (In your sketch the position of object and image with respect to the principal focus of lens should be shown clearly). 


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.


How would a pencil look like if you saw it through How would a pencil look like if you saw it through

 

 


The focal lengths of four convex lenses PQR and S are 20 cm, 15 cm, 5 cm and 10 cm, respectively. The lens having greatest power is :
(a) P
(b) Q
(c) R
(d) S


Show by a diagram the refraction of two light rays incident parallel to the principal axis on a convex lens by treating it as a combination of a glass slab and two triangular glass prisms.


Distinguish between:

Concave lens and Convex Lens


Distinguish between:

Concave lens and Convex lens


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