A myopic person can not see objects lyin...

A myopic person can not see objects lying beyond 2m. What is the power of the lens required to remove this defect?

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MODEL PAPER SET-14
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The far point of a myopic (short-sighted ) 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.

The near point of a hypermetropic (long -sighted ) person is 75 cm from the eye . What is the power of the lens required to enable the person to read clearly a book held at 25 cm from the eye ?

The energy of electron of H atom is, E_n = -(2.18xx10^-18)/n^2 J. How amount of energy is required to remove the electron from n = 2 orbit? What is the value of longest wave length of light required to remove this electron?

A short sighted person can see objects at 20cm from his eyes. What type of lens is to be used to see clearly objects at 100cm away?

A person using spectacles having power +2.5m^(-1) can see the objects distinctly at a distance of 25 cm . What is the near point for the person ? What type of defect of vision does the eye have ?

A person who can see objects clearly at a distance of 10cm , requires spectacles to be able to see clearly objects at a distance of 30 cm. what type of spectacle should he use? Find the focal length of the lens.

A long -sighted man can clearly see at any distance beyond 2.5 m . What kind of lens in his spectacles does require to read books placed 25 cm from his eyes?

A person can see distinctly up to a distance of 2 m and no further. To see distinctly up to a long distance what type of spectacles should he use? What will be the power of the lens of the spectacles?

A Person who can see objects clearly at a distance of 10cm, required spectacles to be able ot see clearly objects at a distance of 30cm. What types of spectacle should he use? Find the focal length of the lens.

UNITED BOOK HOUSE-MODEL PAPER SET-15-EXERCISE

Write down important properties of electromagnetic waves.
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Show that the energy of (He2^4) for first excited state is numerically...
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There is only one electron in H1^1 atom but why we observe numerous nu...
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Explain— Electric field lines cut the equipotential surface normally.
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An electric dipole is kept in the uniform electric field vecE . If vec...
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Four charges of + 2 xx10^-9c, +,1 xx 10^-9c,-2xx10^-9c and + 3 xx10^-9...
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Establish the relation between magnetic permeability and magnetic susc...
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In a Young's double slit experiment, two wavelengths of 500nm and 700 ...
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Write down the relationship between wavelength and energy of a photon?...
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Give the definition of photoelectric threshold frequency and stopping,...
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If 15 kV is the P.D. between the cathode and target and it produces co...
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What is a NAND gate?
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Obtain the balanced conditon of Wheatstone bridge from Kirchhoff’s Law...
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A potential difference of 5 V is applied across a conductor of length ...
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5V potential difference is applied to a conductor of Length 10cm.If th...
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A circular disc is rotating about its natural axis with angular veloci...
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If R =25Omega and inductive reactance=50Omega in an A.C circuit, then ...
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In an LCR circuit R= 10Omega, L= 50mH & C=5muF.What is the series reso...
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State the Huygens Principle for Physical Op'tics
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A myopic person can not see objects lying beyond 2m. What is the power...
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