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प्रश्न
The angle formed between the normal and the refracted ray is known as the angle of incidence.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
Draw a diagram to represent a convex mirror. On this diagram mark principal axis, principal focus F and the centre of C if the focal length of convex mirror is 3 cm.
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
What is the effect on the size and position of the image of moving the object (i) towards the lens, and (ii) away from the lens?
Write true or false
The focal length of a convex mirror is equal to its radius of curvature.
A convex mirror is used
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
List four properties of the image formed by a convex mirror when object is placed between focus and pole of the mirror.
State whether true or false. If false, correct the statement.
The convex mirror always produces a virtual, diminished and erect image of the object.
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.
Assertion: A real image cannot be produced by plane or convex mirror.
Reason: The focal length of a convex mirror is always taken as positive.
