The nuclear radius of Al 13 27 is 3 . 6 fermi. Find the nuclear radius of Cu 29 64 .

Radius of Al is r Al = r ∘ A 1 3 = r ∘ 27 1 3 = 3 . 6 fermi, here A is atomic mass number corresponding to Al . For the radius of Cu is r Cu = r ∘ A 1 3 = r ∘ 64 1 3 . Now, r Cu r Al = 64 1 3 27 1 3 = 4 3 ⇒ r Cu = r Al × 4 3 = 4 . 8 fermi. Hence, the nuclear radius of Cu 29 64 is 4 . 8 fermi.

Match each disease with its correct type of vaccine: (a) Tuberculosis (i) Harmless virus (b) Whooping cough (ii) Inactivated toxin (c) Diphtheria (iii) Killed bacteria (d) Polio (iv) Harmless bacteria

(a) (b) (c) (d) (iv) (iii) (ii) (i)

(a) (b) (c) (d) (ii) (i) (iii) (iv)

(a) (b) (c) (d) (iii) (ii) (iv) (i)

(a) (b) (c) (d) (i) (ii) (iv) (iii)

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Important Questions on Atoms

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

If one of two identical slits producing interference in Young’s experiment is covered with glass, so that the light intensity passing through it is reduced to

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, find the ratio of the maximum and minimum intensity of the fringe in the interference pattern.

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Derive the expression for the fringe width in Young's double slit experiment.

MEDIUM

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

What kind of fringes do you expect to observe if white light is used instead of monochromatic light?

EASY

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Two light waves of intensities

I_{1}

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I_{2}

having same frequency pass through the same medium at a time in the same direction and interfere. The sum of the minimum and maximum intensities is

EASY

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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^{40} C a

and

^{16} O

is close to:

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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HARD

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Derive the expression for the intensity at a point where interference of light occurs. Arrive at the conditions for maximum and zero intensity.

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

MALT constitutes about _______ percent of the lymphoid tissue in human body.

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

A molecule that can act as a genetic material must fulfill the traits given below, except

MEDIUM

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

The nuclear radius of

{}_{13}^{27}{Al}

3.6

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{}_{29}^{64}{Cu}

EASY

Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

The final proof for DNA as the genetic material came from the experiments of

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Match each disease with its correct type of vaccine:

(a)	Tuberculosis	(i)	Harmless virus
(b)	Whooping cough	(ii)	Inactivated toxin
(c)	Diphtheria	(iii)	Killed bacteria
(d)	Polio	(iv)	Harmless bacteria

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Consider a Young's double slit experiment as shown in figure. What should be the slit separation

d

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λ

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(S_{1})

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Describe the experiment carries out by Hershey and Chase. Write the conclusion they arrived at.

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Physics>Modern Physics>Atoms>Alpha-particle Scattering and Rutherford's Nuclear Model of Atom

Explain how the biochemical characterisation (nature) of ‘Transforming Principle’ was determined, which was not defined from Griffith’s experiments.

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Important Questions on Atoms

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