Question # 1

Which one of the following relationship is correct about energy and frequency.

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E = hv

E = h/v

E = v/h

h = v/E

The velocity of photon is.

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Depends on its source

Equal to square of its amplitude

Depends on its wavelength

Independent of its wavelength

Which gas has highest e/m ratio

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Hydrogen

Helium

Nitrogen

Oxygen

Spectrum produced due to the transition of electron from M-Shall to L-Shell is.

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Absorption

Emission

Continuous

X rays

Energy and wavelength of a photon are related as.

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Direct

In direct

No correlation

Inverse under root

When fast neutron carries nuclear reaction with nitrogen it ejects aprticles.

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Alpha

Gamma

Beta

Nil

The atomis radius is of the order of

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10^-8cm

10⁸cm

10^-12cm

10^-10cm

Lyman series lies in spectral region

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Infrared

Ultra violet

Visible

None of these

The line of the balmer series in the visible region of the spectrum, but the limiting line, in the series lies in

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Visible region

X-Ray region

I.R region

U.V. region

In the ground state of an atom, the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

In which de excitation of electron of hydrogen atom maximum energy is relaeased.

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From n2 to n1

From n3 to n2

From na to n1

From na to n2

Orbitals having same energy are called

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Hybird orbitals

Valence orbitals

Degenerate orbitals

D-orbitals

Positive rays were discovered by.

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J.J.Thomson

Goldstein

Ruther ford

William Crookes

When 6d orbital is complete, the entering electron goes into.

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7f

7s

7p

7d

Rutherford's model of atom failed because

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The atom did not have a nucleus and electrons

It did not account for the attraction between protons and neutrons

It did not account for the stability of the atom

There is actually no space between the nucleus and the electrons

The Rutherford experiment of using a stream of alpha particles on a piece of gold foil proved that.

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The atom was a solid sphere

The atom had electron

The atom had neutrons

The atom had a great empty space in it

Quantum number values for 3p orbitals are.

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n = 0, l = 3

n = 3 , l = 1

n = 2, l = 1

n = 2 , l = 3

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