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प्रश्न
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
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उत्तर
Lateral inversion is the phenomenon in which the right side of an object appears to be the left side in its image in a plane mirror.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- aperture
What type of image is formed:
on a cinema screen?
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
Draw a ray diagram to show the formation of image by a concave mirror for the object beyond its centre of curvature. State three characteristics of the image.
Write two more characteristics of the image.
Does the mirror mentioned in part (b) form real image for all locations of the object?
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
State two uses of a concave mirror.
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
What is the relation between focal length and radius of curvature of a concave mirror?
What do you understand by the term real image?
A student traces the path of a ray of light passing through a rectangular slab.
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For measuring the angle of incidence, he must position the protractor in the manner shown in the figure:
