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प्रश्न
Define the Focal length of a spherical mirror
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उत्तर
The distance between the pole and the focus is called focal length of the mirror. It is measured in meter or cm.
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संबंधित प्रश्न
A concave mirror always forms a real image.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
If a spherical mirror breaks, what type of mirrors are the individual pieces?
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
What is a spherical mirror?
Name the mirrors shown in Figure (a) and (b).
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
Draw a ray diagram to show the formation of image by a concave mirror for the object beyond its centre of curvature. State three characteristics of the image.
For what position of object, the image formed by a concave mirror is magnified and erect?
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term in relation to concave mirror.
Pole
Define the following term in relation to concave mirror.
Principal focus
Does the mirror name by your form a real image for all locations? Give a reason for your answer.
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
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°
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
Name the two types of spherical mirrors.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
