Advertisements
Advertisements
प्रश्न
List in proper sequence the steps of the experiment for determining the approximate focal length of a given concave mirror by obtaining the image of a distant object.
Advertisements
उत्तर
(i) Fix the concave mirror on the stand and place it on table facing towards a distant object.
(ii) Arrange the screen on the table so that the image of the distant object is obtained on it.
(iii) Measure the distance between the mirror and the screen using a metre scale. This distance is the focal length (F) of the mirror.
APPEARS IN
संबंधित प्रश्न
What is refraction of light?
What is lateral inversion? Explain by giving a suitable example.
Define the following terms used in the study of reflection of light by drawing a labelled ray-diagram:
- Incident ray
- Point of incidence
- Normal
- Reflected ray
- Angle of incidence
- Angle of reflection
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
Light travels more quickly through water than through glass.
- Which is optically denser: water or glass?
- If a ray of light passes from glass into water, which way will it bend: towards the normal or away from the normal?
Show the lateral displacement of the ray on the diagram.
What is refractive index?
Light is refracted or bent while going from one medium to another because of its ______ changes.
A water tank appears shallower when it is viewed from the top due to refraction.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
