Advertisements
Advertisements
Question
A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
Advertisements
Solution
| S.No. | Wall Reflected Light | Mirror Reflected Light |
| 1 | Light rays are reflected in all directions due to the rough surface. | Light rays are reflected in one direction only due to the smooth surface. |
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .
An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the positions of the original and final images seen in the mirror is ______.
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
As light rays pass from water into glass, are they refracted towards the normal or away from the normal?
What is meant by 'refraction of light'? Draw a labelled ray diagram to show the refraction of light.
With the help of a labelled diagram, explain why a tank full of water appears less deep than it actually is.
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.
Explain with the help of a labelled ray diagram, why a pencil partly immersed in water appears to be bent at the water surface. State whether the bending of pencil will increase or decrease if water is replaced by another liquid which is optically more dense than water. Give reason for your answer.
The speed of light is more in glass than in water.
Water is optically .......... than air.
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (/), and the angle of refraction (r)
Define the principal focus of a concave mirror.
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
The laws of reflection hold true for ______.
The incident rays and refracting rays are on opposite sides of the normal.
The refractive index of four substances A, B, C, and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
The angle of incidence for a ray of light having zero reflection angle is ______.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
