Advertisements
Advertisements
प्रश्न
Select the correct option:
Which mirror is used in periscope?
पर्याय
concave mirror
convex mirror
Plane mirror
parabolic mirror
Advertisements
उत्तर
Plane mirror
APPEARS IN
संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
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?
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
Write two more characteristics of the image.
Define the following term in relation to concave mirror.
Principal focus
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
In torches, search lights and headlights of vehicles the bulb is placed ______.
