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प्रश्न
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
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उत्तर
The distance between the mirror and the carbon paper is the focal length.
संबंधित प्रश्न
Explain the following term related to spherical lenses:- aperture
We can obtain a real, enlarged and inverted image by a concave mirror.
A concave mirror always forms a real image.
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?
Name the two types of spherical mirrors. What type of mirror is represented by the:
- back side of a shining steel spoon?
- front side of a shining steel spoon?
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.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
State the position of object for which the image formed by a concave mirror is of same size.
Does the mirror name by your form a real image for all locations? Give a reason for your answer.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
