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What is the remedy of hypermetropia?

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प्रश्न

What is the remedy of hypermetropia?

एक पंक्ति में उत्तर
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उत्तर

A hypermetropic eye is corrected by using a convex lens of suitable focal length.

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अध्याय 7: Wave Optics - Evaluation [पृष्ठ १०४]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
अध्याय 7 Wave Optics
Evaluation | Q 46. | पृष्ठ १०४

संबंधित प्रश्न

Define and describe the magnifying power of an optical instrument.


Answer the following question in detail.

How does magnifying power differ from linear or lateral magnification?


Answer the following question in detail.

What is a terrestrial telescope and an astronomical telescope?


Answer the following question in detail.

What is the limitation in increasing the magnifying powers of the astronomical telescope?


Discuss about simple microscope and obtain the equations for magnification for near point focusing and normal focusing.


What is myopia?


Discuss about simple microscope and obtain the equations for magnification for near point focusing and normal focusing.


Obtain the equation for resolving the power of the microscope.


Discuss about astronomical telescope.


Mention different parts of the spectrometer.


A compound microscope has a magnification of 30. The focal length of eye piece is 5 cm. Assuming the final image to be at least distance of distinct vision, find the magnification produced by the objective.


The near point and the far point for a person are 50 cm and 500 cm, respectively. Calculate the power of the lens the person should wear to read a book held in hand at 25 cm. What maximum distance is clearly visible for the person with this lens on the eye?


A light wave of wavelength λ is incident on a slit of width d. The resulting diffraction pattern is observed on a screen at a distance D. If linear width of the principal maxima is equal to the width of the slit, then the distance D is


When a convex lens of 12.5 cm focal length is used as a magnifying glass, normal eye can see an object clearly at a distance of 25 cm. The magnifying power of the instrument is ____________.


The magnifying power of a telescope is nine. When it is adjusted for parallel rays, the distance between the objective and eyepiece is 20 cm. The focal length of objective and eyepiece are respectively.


An object viewed from a near point distance of 25 cm, using a microscopic lens with magnification '6', gives an unresolved image. A resolved image is observed at infinite distance with a total magnification double the earlier using an eyepiece along with the given lens and a tube of length 0.6 m, if the focal length of the eyepiece is equal to ______ cm.


Magnification produced by astronomical telescope for normal adjustment is 10 and length of telescope is 1.1 m. The magnification when the image is formed at least distance of distinct vision (D = 25 cm) is ______.


A camera objective has an aperture diameter of d. If the aperture is reduced to diameter d/2, the exposure time under identical conditions of light should be made ______.


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