Advertisements
Advertisements
प्रश्न
How does the light have to enter the glass:
to produce a large amount of bending?
Advertisements
उत्तर
To produce a large amount of bending, the light ray has to enter the glass with a large angle of incidence.
APPEARS IN
संबंधित प्रश्न
A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
What is the difference between regular reflection of light and diffuse reflection of light?
The image formed by a plane mirror is :
(a) virtual, behind the mirror and enlarged.
(b) virtual, behind the mirror and of the same size as the object.
(c) real, at the surface of the mirror and enlarged.
(d) real, behind the mirror and of the same size as the object.
A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.
A coin in a glass tumbler appears to rise as the glass tumbler is slowly filled with water. Name the phenomenon responsible for this effect.
With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.
The depth of a pond when seen from above appears to be less.
Light travels at a lower speed in water than in air.
Image is formed by a mirror due to refraction of light.
The size of image of an object by a convex lens of focal length 20 cm is observed to be reduced to `1/3` rd of its size . Find the distance of the object from the optical centre of the lens .
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
Explain the working of a periscope.
What is refractive index?
You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?
Which surface will not reflect most of the light falling on them?
A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.
Mirage is an example of refraction and the total internal reflection of light.
Match the following:
| Column I | Column II | ||
| 1. | r > 90 | a. | Light gazes at the surface of separation between the two modes. |
| 2. | r = 90 | b. | No refraction. |
| 3. | r < 90 | c. | Refracted ray away from the normal |
In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are ______.
A ray of light starting from diamond is incident on the interface separating diamond and water. Draw a labelled ray diagram to show. the refraction of light in this case.
