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प्रश्न
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
उत्तर
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संबंधित प्रश्न
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
Explain the following term related to spherical lenses:- centres of curvature
An image which can be obtained on a screen is called a ______ image.
Define the Focal length of a spherical mirror
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
Define the following term in relation to concave mirror.
Focal length
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 ______.
