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प्रश्न
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°
पर्याय
If both assertion and reason are true and reason is the correct explanation.
If both assertion and reason are true and reason is not the correct explanation.
If assertion is true but reason is false.
If assertion is false but reason is true.
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उत्तर
If both assertion and reason are true and reason is not the correct explanation.
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संबंधित प्रश्न
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
A diverging lens is used in:
(a) a magnifying glass
(b) a car to see objects on rear side
(c) spectacles for the correction of short sight
(d) a simple camera
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
Write two more characteristics of the image.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Define the following term:
convex mirror
