Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
What is a spectrum?
Write a short note on dispersion of light.
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
A ray of light passes from water to air. How does the speed of light change?
How must light travel out of a substance if it is not going to be refracted?
How is the refractive index of a medium related to the speed of light in it?
Fill in the blanks to complete the following sentence
When light travels from a denser to a rarer medium, its speed ……………….
Complete Fig. 4.32 to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.
What is the correct reason for blinking / flickering of stars? Explain it.
a) The blasts in the stars.
b) Absorption of star light by the atmosphere.
c) Motion of the stars.
d) Changing refractive index of gases in the atmosphere.
