Advertisements
Advertisements
प्रश्न
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
उत्तर
he angle of reflection is 500, in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
Here, the angle of incidence = 90o - 40o = 50o( the angle of incidence is the angle between the incident ray and the normal).
APPEARS IN
संबंधित प्रश्न
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
What kind of mirror is required for obtaining a virtual image of the same size as the object?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
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.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
Does the mirror mentioned in part (b) form real image for all locations of the object?
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
What is “aperture”?