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प्रश्न
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).
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उत्तर
| S.No | Image formed by a diverging lens | Image formed by a converging lens |
| 1 | Image formed is virtual and erect | Image formed is real and inverted |
| 2 | Image is smaller in size than the object | Image is larger in size than the object |
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संबंधित प्रश्न
What kind of mirror is required for obtaining a virtual image of the same size as the object?
Name the spherical mirror which can produce a real and diminished image of an object.
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
A ray of light travels from a denser medium to a rarer medium. How will it bend?
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.
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
State the position of object for which the image formed by a concave mirror is of same size.
Write the spherical mirror's formula and explain the meaning of each symbol used in it.
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
The image formed by a convex mirror is
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
