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प्रश्न
The power of lens depends on the focal length of the lens
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
(a) At what distance should the lens be held from the figure in order to view the squares distinctly with the maximum possible magnifying power?
(b) What is the magnification in this case?
(c) Is the magnification equal to the magnifying power in this case? Explain.
A converging lens has focal length of 50 mm. What is the power of the lens?
What is the nature of a lens having a power of + 0.5 D?
Define power of a lens. Write its units. Deduce the relation `1/f =1/f_1 +1/f_2`for two thin lenses kept in contact coaxially.
A symmetric double convex lens in cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens was 4 D, the power a cut-lens will be
A convex lens produces a double size real image when an object is placed at a distance of 18 cm from it. Where should the object be placed to produce a triple size real image?
Find the power of a convex lens of focal length of + 25 cm.
If focal length of a convex lens is 20 cm at what is the power of the lens?
When monochromatic red light is used instead of blue light in a convex lens, its focal length will ______.
The lens of power + 1·0 D is ______.
