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प्रश्न
Define the term Normal.
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उत्तर
Normal to the surface of a mirror at any point is the straight line at the right angle to the tangent drawn at that point.
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संबंधित प्रश्न
One half of a convex lens of focal length 10 cm is covered with a black paper. Can such a lens produce an image of a complete object placed at a distance of 30 cm from the lens? Draw a ray diagram to justify your answer. A 4 cm tall object is placed perpendicular to its principal axis of a convex lens of focal length 20 cm. The distance of the object from the lens is 15 cm. Find the nature, position and the size of the image.
Image formed by a convex ______ is always virtual and smaller in size.
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.
Why is a hole burnt in the carbon paper?
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
The radius of curvature of a convex mirror is 40 cm. Find its focal length.
The magnification for a mirror is -3. How are u and v related?
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°
The image formed in a plane mirror is always inverted.
