Advertisements
Advertisements
प्रश्न
An extended object in the form of an arrow pointing upward has been placed in front of a plane mirror. Draw a labelled ray-diagram to show the formation of its image.
उत्तर
APPEARS IN
संबंधित प्रश्न
A boy with a mouth 5 cm wide stands 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth?
Which phenomenon of light makes the water to appear shallower than it really is?
The speed of light is more in glass than in water.
Light travels at a lower speed in water than in air.
A ray of light passes from medium 1 to medium 2. Which of the following quantities of the refracted ray will differ from that of the incident ray: Speed, intensity, frequency, wavelength?
Choose and write the correct option.
If we gradually increase the angle of incidence of a ray of light passing through prism then …..
Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
Write scientific reason.
The coin disappears in a vessel as it is seen from a specific location. But as soon as the water is poured into the vessel to a certain level, the coin appears.
Write scientific reason.
A pencil appears to be broken near the surface of water.
Match the following:
Column I | Column II | ||
1. | r > 90 | a. | Light gazes at the surface of separation between the two modes. |
2. | r = 90 | b. | No refraction. |
3. | r < 90 | c. | Refracted ray away from the normal |