Advertisements
Advertisements
Question
Water is optically .......... than air.
Advertisements
Solution
Water is optically denser than air.
APPEARS IN
RELATED QUESTIONS
The letter F is placed in front of a plane mirror:
- How would its image look like when seen in a plane mirror?
- What is the name of the phenomenon involved?
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
As light rays pass from water into glass, are they refracted towards the normal or away from the normal?
Fill in the following blank with suitable word:
Light travelling along a normal is ...............refracted.
When a light ray passes from air into glass, what happens to its speed? Draw a diagram to show which way the ray of light bends.
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.
We can see the sun even when it is little below the horizon because of ______.
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 .
Numerical problems.
The speed of light in water is 2.25 × 108 ms–1. If the speed of light in vacuum is 3 × 108 ms–1, calculate the refractive index of water.
The bending of light as it passes from one medium to another is called ______.
