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प्रश्न
The image of an object formed by a plane mirror is:
(a) virtual
(b) real
(c) diminished
(d) upside-down
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उत्तर
(a) Virtual
The reason being, the image cannot be projected on a screen.
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संबंधित प्रश्न
The letter F is placed in front of a plane mirror:
How would its image look like when seen in a plane mirror?
A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.
Why does a ray of light bend when it travels from one medium to another?
A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:
(a) 0°
(b) 45°
(c) 90°
(d) 120°
Image is formed by a mirror due to refraction of light.
When a ray of light travels from air to glass, it bends .......... the normal.
Match the Following
| Column A | Column B |
| (a) white Light | (1) Convex mirror |
| (b) Refraction | (2) Concave mirror |
| (c) Virtual images | (3) refraction |
| (d) Real images | (4) spectrum |
| (e) Prism | (5) ray of light from glass to air |
What do you understand by refraction of light?
The diagram (figure) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.
The size of image of an object by a convex lens of focal length 20 cm is observed to be reduced to `1/3` rd of its size . Find the distance of the object from the optical centre of the lens .
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
A real image is formed by the light rays after reflection or refraction when they:
- actually meet or intersect with each other.
- actually converge at a point.
- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.
A water tank appears shallower when it is viewed from the top due to refraction.
How do twinkling stars occur? (or) what is the cause of the twinkling of stars?
In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are ______.
