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प्रश्न
Which type of mirror is used in the following?
Floodlights
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उत्तर
Concave mirror
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संबंधित प्रश्न
It is desired to obtain an erect image of an object, using concave mirror of focal length of 12 cm.
What should be the range of distance of an object placed in front of the mirror?
A student wants to project the image of a candle flame on a screen 48 cm in front of a mirror by keeping the flame at a distance of 12 cm from its pole.
(a) Suggest the type of mirror he should use.
(b) Find the linear magnification of the image produced.
(c) How far is the image from its object?
(d) Draw ray diagram to show the image formation in this case.
Name the type of mirror used in the following situation:
Headlights of a car
Support your answer with reason.
A concave mirror ______ rays of light whereas a convex mirror ______ rays of light.
Copy this figure in your answer book and show the direction of the light ray after reflection:
Explain why, a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path.
Briefly describe how you would find the focal length of a concave mirror quickly but approximately
A large concave mirror has a radius of curvature of 1.5 m. A person stands 10 m in front of the mirror. Where is the person's image?
If the object is moved further away from the mirror, what changes are there in the position and size of the image?
An object is placed at a large distance in front of a concave mirror of radius of curvature 40 cm. The image will be formed in front of the mirror at a distance:
(a) 20 cm
(b) 30 cm
(c) 40 cm
(d) 50 cm
Between which two points of concave mirror should an object be placed to obtain a magnification of:
(a) −3
(b) +25
(c) −0.4
A student has to determine the focal length of a concave mirror by obtaining the image of a distant object on a screen. For getting best result he should focus
(A) a distant tree or an electric pole
(B) a well-illuminated distant building
(C) well-lit grills of the nearest window
(D) a burning candle laced at the distant edge of the laboratory table
A _____________ mirror is used by a dentist.
Study the following ray diagram and list two mistakes committed by the student while tracing it. Rectify these mistakes by drawing the correct ray diagram to show the real position and size of the image corresponding to the position of the object AB.
Give any two applications of a concave and convex mirror.
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either
The concave reflecting surface of a torch got rusted. What effect would this have on the beam of light from the torch?
In torches, searchlights, and headlights of vehicles, the bulb is placed ______ of the concave mirror.
Which type of mirror is used in the following?
Shaving mirror
