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प्रश्न
A ray of light travels from a denser medium to a rarer medium. How will it bend?
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उत्तर
When a ray of light travels from a DENSER medium to a RARER medium it will bend AWAY from normal
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संबंधित प्रश्न
Match the items given in Column I with one or more items of Column II.
| Column I | Column II | ||
| (a) | A plane mirror | (i) | Used as a magnifying glass. |
| (b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
| (c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
| (d) | A concave mirror | (iv) | The image is always inverted and magnified. |
| (e) | A concave lens | (v) | The image is erect and of the same size as the object. |
| (vi) | The image is erect and smaller in size than the object. |
What do you mean by the term dispersion?
A student obtained on a screen the sharp image of a candle flame placed at the farther end of laboratory table using a concave mirror. For getting better value of focal length of the mirror, the teacher suggested to him to focus the sun. What should the student do?
(A) Should move the mirror away from the screen.
(B) Should move the mirror towards the screen.
(C) Should move the mirror and screen both towards the sun.
(D) Should move only the screen towards the sun.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
The distance from the pole to the focus is called ______.
Geometric centre of the spherical mirror is ______.
What is “aperture”?
