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प्रश्न
Write all the capital letters of the alphabet which look the same in a plane mirror.
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उत्तर
All the capital letters of the alphabet that look the same in a plane mirror are W, X, V, A, H, M, O, I and T.
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संबंधित प्रश्न
What type of reflection of light takes place from a cinema screen?
An extended object in the form of an arrow pointing upward has been placed in front of a plane mirror. Draw a labelled ray-diagram to show the formation of its image.
Why does a ray of light bend when it travels from one medium to another?
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:
(a) 0°
(b) 45°
(c) 90°
(d) 120°
Light travels at a lower speed in water than in air.
When a ray of light travels from water to air, it bends ............. the normal.
List four characteristics of the image formed by a concave lens of focal length 20 cm when the object is placed at a distance of 40 cm from its optical centre.
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
The refractive index of a transparent medium is always greater than ______.
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
Which object use the reflection of light?
When light passes from one medium to another the ray gets bent. This property of light is called ______.
Twinkling of stars and Mirage are the two phenomena occurring due to refraction.
When a ray of light travels normal to the given surface, then the angle of refraction is ______.
The ray that enters the second medium after crossing the boundary is called the:
When light passes from one transparent medium to another, its direction changes due to:
When a light ray passes from a rarer medium to a denser medium, it bends:
When a light ray passes from a denser medium to a rarer medium, it bends:
The absolute refractive index of a medium is given by:
