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प्रश्न
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
विकल्प
Retraces its path
Passes through the focus
Passes through the pole
Becomes parallel to the principal axis.
उत्तर
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray : Retraces its path
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संबंधित प्रश्न
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
State whether this spherical mirror will diverge or converge light rays.
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
Upto what maximum distance from a concave mirror, the image can be obtained? What will be the location of object for it?
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?
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the objective, when the angular magnification of the telescope is 2, will be ______.
