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प्रश्न
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
पर्याय
plane
convex
concave
convex and concave
उत्तर
concave
APPEARS IN
संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
Define the following term in the context of spherical mirrors:- Principal axis
An image formed by a ______ mirror is always of the same size as that of the object.
A concave mirror always forms a real image.
Give one use each of a concave and a convex mirror.
A virtual image larger than the object can be produced by a ______.
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
What type of image is formed:
in a plane mirror?
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
Name the spherical mirror which can produce a virtual and diminished image of an object.
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
What type of mirror can be used to obtain a real image of an object?
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
State two uses of a concave mirror.
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
The sun is seen before the sunrise and after the sunset.
Define the following term:
convex mirror
Define the following term in relation to concave mirror.
Pole
Define the term Pole.
Define the term Principal focus.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Which of the following has curved reflecting surface?
Geometric centre of the spherical mirror is ______.
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
Name the two types of spherical mirrors.
How tall does a mirror have to be to fit an entire person’s body?
