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You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from - Science

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प्रश्न

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

पर्याय

  • both concave lens and convex lens.

  • both concave mirror and convex mirror.

  • both concave mirror and convex lens.

  • both convex mirror and concave lens.

MCQ
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उत्तर

both concave mirror and convex lens.

Explanation:

Both concave mirror and convex lens. Both concave mirror and convex lens can form inverted and real images of an object.

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पाठ 15: Light - MULTIPLE CHOICE QUESTIONS [पृष्ठ ८१]

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एनसीईआरटी एक्झांप्लर Science [English] Class 7
पाठ 15 Light
MULTIPLE CHOICE QUESTIONS | Q 7. | पृष्ठ ८१

संबंधित प्रश्‍न

To construct a ray diagram we use two rays of light which are so chosen that it is easy to determine their directions after reflection from the mirror. Choose these two rays and state the path of these rays after reflection from a concave mirror. Use these two rays to find the nature and position of the image of an object placed at a distance of 15 cm from a concave mirror of focal length 10 cm.


A student has obtained the image of a distant object with a concave mirror to determine its focal length. If he has selected a well-illuminated red building as object, which of the following correctly describes the features of the image formed?

(A) Virtual, inverted and diminished image in red shade

(B) Real, erect and diminished image in pink shade

(C) Real, inverted and diminished image in red shade

(D) Virtual, erect and enlarged image in red shade


Name the type of mirror used by dentists. How does it help? 


A concave mirror has a focal length of 25 cm. At which of the following distance should a person hold his face from this concave mirror so that it may act as a shaving mirror?

(a) 45 cm
(b) 20 cm
(c) 25 cm
(d) 30 cm
Give reason for your choice.


An object of 5.0 cm size is placed at a distance of 20.0 cm from a converging mirror of focal length 15.0 cm. At what distance from the mirror should a screen be placed to get the sharp image? Also calculate the size of the image.


What type of mirror should be used as a shaving mirror?


Draw a ray diagram to show the formation of image of an object placed between the focus and centre of curvature of a concave mirror. State the position, size and nature of the image.


Consider the following properties of virtual images:

  1. cannot be projected on the screen
  2. are formed by both concave and convex lens
  3. are always erect
  4. are always inverted

The correct properties are:


Which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in figure?

A B C D

Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?


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