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What is the remedy of myopia? - Physics

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प्रश्न

What is the remedy of myopia?

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उत्तर

A myopia eye is corrected by using a concave lens of focal length equal to the distance of the far point F from the eye.

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Optical Instruments
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Wave Optics - Evaluation [पृष्ठ १०४]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 7 Wave Optics
Evaluation | Q 45. | पृष्ठ १०४

संबंधित प्रश्‍न

Answer the following question in detail.

Define and describe the magnifying power of an optical instrument.


Answer the following question in detail.

Derive an expression for the magnifying power of a simple microscope. Obtain its minimum and maximum values in terms of its focal length.


Answer the following question in detail.

What is the limitation in increasing the magnifying powers of a simple microscope?


Answer the following question in detail.

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


Why is oil-immersed objective preferred in a microscope?


What is astigmatism? What is its remedy?


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


Mention different parts of the spectrometer.


Explain the preliminary adjustments of the spectrometer.


Explain the experimental determination of the material of the prism using a 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.


A compound microscope has a magnifying power of 100 when the image is formed at infinity. The objective has a focal length of 0.5 cm and the tube length is 6.5 cm. What is the focal length of the eyepiece.


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


If astronomical telescope of length 1.53 m has magnifying power of magnitude 50, the values of fo and fe are ____________.


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 observer looks at a distant tree of height 10 m with a telescope of magnifying power of 20. To the observer the tree appears:


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