Advertisements
Advertisements
Question
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
Advertisements
Solution
Given:
Speed of light in air c = 3 x 108 ms-1
Refractive index of a medium µ = 1.5
To find : Speed of light in medium v = ?
Formula :
µ = `c/u`
Solution:
1.5 = `3xx10/u`
APPEARS IN
RELATED QUESTIONS
Match the following
| (a). A light ray passes from air to glass | (1) . speeds up |
| (b). A light ray passes from glass to water | (2). reflects red light |
| (c). Virtual image | (3). primary colours |
| (d). Red rose | (4). plane mirror |
| (e). Red, green, and blue | (5). slows down |
Can light travel in vacuum?
How does light make an object visible?
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
Does the flame of a gas stove emit light?
Tick the correct answer.
A tube light is a
Answer the following.
Write down five man-made sources of light.
Answer the following.
Name some sources of light that are not hot.
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively
A ray of the light incident along normal to the mirror ______ its path.
