short answer type question
(i) What is reflection of light ?
(ii) What type of image is formed by a plane mirror ?
(iii) What type of reflection forms an image?
(iv) How is rainbow formed ?
(v) State the laws of reflection?
Answers
Answer:
1. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.
2. A plane mirror always forms a virtual image (behind the mirror). The image and object are the same distance from a flat mirror, the image size is the same as the object size, and the image is upright.
3. Regular reflection occurs when light reflects off a very smooth surface and forms a clear image. Diffuse reflection occurs when light reflects off a rough surface and forms a blurry image or no image at all.
4. A rainbow is caused by sunlight and atmospheric conditions. Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors. When light exits the droplet, it makes a rainbow.
5. The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.
Explanation:
I hope it helps you.
Answer:
i) It is the bouncing back of light into the same medium
ii) size of image is as the size of the object.
distance between the object and mirror is same as distance between the image and the mirror.
the image is laterally inverted.
iii) regular and irregular both types of reflection forms image.
iv) the rainbow is formed by the dispersion of light by the use of water drops of water of rain.
v) the angle of incidence and the angle of reflection are equal.
incident ray and reflected ray and the normal lie on the same plane