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प्रश्न
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
In a convex spherical mirror, reflection of light takes place at:
(a) a flat surface
(b) a bent-in surface
(c) a bulging-our surface
(d) an uneven surface
A diverging mirror is
(a) a plane mirror
(b) a convex mirror
(c) a concave mirror
(d) a shaving mirror
Name the mirror which can give:
an erect and diminished image of an object.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
- at 2F1,
- between F₁ and the optical centre O of the lens.
Which of the above two cases shows the use of a convex lens as a magnifying glass? Give reasons for your choice.
An object is placed well outside the principal focus of a convex lens. Draw a ray diagram to show how the image is formed, and say whether the image is real or virtual.
Explain why a real image can be projected on a screen but a virtual image cannot.
Write true or false
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
A convex mirror is used
A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.
