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The for point of a myopic person is 80 c...

The for point of a myopic person is `80 cm` in front of the eye. What is the power of the lens required to enable him to see very distant objects clearly? In what way does the corrective lens help the above person? Does the lens magnify very distant object? Explain.

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(a) The far point of a myopic person is 80 cm . In front of the eye. What is the power of the lens required to enable him to see very distant objects clearly ? (b) In what way does the corrective lens help the person above ? Does the lens magnify very distant objects ? Explain carefully. ( c) The person above prefers to remove his spectacles while reading a book. Explain why ?

The far point of a myopic person is 120 cm in front of the eye. Calculate the power of the lens required to enable the person see distant object clearly.

The far point of a myopic person is 150 cm in front of the eye. Calculate the focal length and power of a lens required to enable him to see distant objects clearly.

The far point of a myopic person is 150 cm in front of the eye. Calculate the focal length and power of a lens required to enable him to see distant objects clearly.

The far point of a myopic person is 150 cm in front of the eye. Calculate the focal length and power of a lens required to enable him to see distant objects clearly.

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

(a) The near point of a hypermetropic person is at 75 cm from the eye. What is the power of the lens required to enable him to read clearly a book held at 25 cm from the eye ? (b) In what way does the corrective lens help the person above ? Does the lens magnify objects held near the eye ? ( c) The person above prefers to remove his spectacles while looking at the sky. Explain why ?

The far point of a person having myopia is 200 cm in front of the eye. Find the focal length and power of lens required to enable him see the distant objects clearly.

RESONANCE-GEOMATRICAL OPTICS -Exercise-3
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  2. Three light rays red (R), green (G) and blue (B) are incident on a rig...

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  3. The for point of a myopic person is 80 cm in front of the eye. What is...

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  4. (a) (i) Draw a labelled ray diagram to show the formation of image in ...

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  5. (a) Draw the ray diagram showing the geometry of formation of the imag...

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  6. The image obtained with a convex lens is erect and its length is 4 tim...

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  7. A converging lens is kept coaxially in contact with a diverging lens -...

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  8. Draw a ray diagram to show the working of a compound microscope. Deduc...

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  9. Two convex lenses of focal length 20 cm and 1 cm constitute a telescop...

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  10. A convex lens made up of glass of refractive index 1.5 is dippedin tur...

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  11. Use the mirror equation to show that (a) an object placed btween f and...

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  12. A gaint refrecting telescope at an observatory has an objective lens o...

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  13. A beam of light converges to a point P.A lens is placed in the path of...

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  14. For the same angle of incidence in media P,Q and R, the angles of refr...

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  15. Define magnifying power of a telescope. Write its expression. A smal...

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  16. An object AB is kept in front of a concave mirror as shown in Fig. ...

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  17. You are given three lenses L(1),L(2) and L(3) each of focal length 20 ...

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  18. Describe a reflecting type telescope. What are its advantage over the ...

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  19. Which type of lens is used to correct astigmatisum ?

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  20. A biconcave lens made of transparent material of refractive index 1.25...

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