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प्रश्न
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उत्तर
Four characteristics of light are:-
(a). Light waves can travel through a vacuum
(b). Light waves are transverse waves
(c). The wavelength of light waves is short so that their length is measured in cents-microns.
(d). The velocity of light in a vacuum is 3 x 108 m/s.
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संबंधित प्रश्न
If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
Explain the following term:
Angle of reflection. Draw diagram/diagrams to show them.
Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
Copy the figure. By taking two rays from point A, show the formation of image. State four characteristics of the image.

Does the mirror named by you above give real images for all locations of object?
An object OA is placed on the principal axis of a concave mirror as shown in the figure. Copy and complete the diagram to show the formation of image.

Show an incident ray AO and the normal ON a plan mirror. draw the reflected ray and then find the angle between the incident and reflected rays.

Which material is transparent?
An object that blocks all of the light from passing through is ______.
