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प्रश्न
Define the term 'limit of resolution'?
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उत्तर
Limit of resolution: The minimum distance between two objects at which they can be seen separately by an optical instrument is known as limit of resolution of the instrument.
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संबंधित प्रश्न
a) Give two reasons to explain why reflecting telescopes are preferred over refracting type.
Use the mirror equation to show that an object placed between f and 2f of a concave mirror produces a real image beyond 2f.
Use the mirror equation to deduce that the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole.
Use the mirror equation to show a convex mirror always produces a virtual image independent of the location of the object ?
Can a plane mirror ever form a real image?
A point source of light is placed in front of a plane mirror.
Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not?
(a) Pole
(b) Focus
(c) Radius of curvature
(d) Principal axis
A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm filled completely with water. Consider the ray leaving the vessel through a corner. Suppose this ray and the ray along the axis of the vessel are used to trace the image. Find the apparent depth of the image and the ratio of real depth to the apparent depth under the assumptions taken. Refractive index of water = 1.33.
Write any one use for each of the following mirrors :
(a) Convex
(b) Concave
When a clock is viewed in a mirror, the needles exhibit a time which appears to be 8:20. Then the actual time will be:
