Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Refraction of light
APPEARS IN
संबंधित प्रश्न
What is refraction of light?
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .
Where is the image when you look at something in a mirror?
What is lateral inversion? Explain by giving a suitable example.
What are the important differences between looking at a photograph of your face and looking at yourself in a plane mirror?
Define the following terms used in the study of reflection of light by drawing a labelled ray-diagram:
- Incident ray
- Point of incidence
- Normal
- Reflected ray
- Angle of incidence
- Angle of reflection
State two effects caused by the refraction of light.
Which phenomenon of light makes the water to appear shallower than it really is?
Why does a ray of light bend when it travels from one medium to another?
What is meant by ‘refraction of light’?
Light travels more quickly through water than through glass.
- Which is optically denser: water or glass?
- If a ray of light passes from glass into water, which way will it bend: towards the normal or away from the normal?
We can see the sun even when it is little below the horizon because of ______.
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.
Right or wrong sentence.
The incident rays and refracted rays are on opposite sides of the column.
Observe the given figure and name the following.
| Ray AB | |
| Ray NM | |
| Ray MD | |
| ∠ r |
In the above diagram light is travelling through different media. It is noted by a scientist that ∠1= ∠3 = ∠4 but ∠2 < ∠1. Which of the following statement would be correct?
Which object use the reflection of light?
The phenomenon of light passing through the object is called ______.
Mirage is an example of refraction and the total internal reflection of light.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
