Advertisements
Advertisements
प्रश्न
Name the type of mirror used in the following situation:
Solar furnace
Support your answer with reason.
Advertisements
उत्तर
Concave Mirror: This is because for solar furnaces, we use a concave mirror. Light from the sun, on reflection from the mirror, is concentrated at the focus of the mirror, producing heat.
APPEARS IN
संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal focus
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
Write the mirror formula. Give the meaning of each symbol which occurs in it.
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Three mirrors are created from a single sphere. Which of the following - pole, centre of curvature, radius of curvature, principal axis - will be common to them and which will not be common?
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
Select the correct option:
A mirror forms a virtual image (diminished) of an object, whatever be the position of object:
Define the term Centre of curvature.
Which of the following has curved reflecting surface?
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
What is the focal length (f) of a mirror?
