Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 6

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In producing X-rays a beam of electrons accelerated by a potential difference V is made to strike a metal target. For what value of V of the following X-rays have the lowest wavelength of 0.3094 angstrom.

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Important Questions on Atomic Physics

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 7

The wavelength of the

X

-rays produced by an

X

-ray tube is

0.76 \overset{\circ}{A}

. The atomic number of anode material is

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 8

Energy levels of a certain atom corresponding to increasing values of energy are such that

E_{A} < E_{B} < E_{C} .

If

λ_{1}, λ_{2}, λ_{3}

are the
wavelengths of radiations corresponding to the transitions

C

to

B, B

to

A

and

C

to

A

respectively, which of the following statements is correct?

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 9

What is the approximate ratio of wavelength of radiation

K_{α_{1}} = K_{α_{2}}

when atomic number of first target is Z₁ = 64 and atomic number of second target is Z₂ = 80 :-

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 10

The ionization potential of the hydrogen atom is 13.6 V. The energy needed to ionize a hydrogen atom which is in its first excited state is about

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 11

Ionization potential of hydrogen is 13.6 volt. If it is excited by a photon of energy 12.1 eV, then the number of lines in the emission spectrum will be

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 12

If electron in a hydrogen atom has moue from

n = 1

to

n = 10

orbit, the potential energy of the system has

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Beta Question Bank for Medical: Physics>Chapter 33 - Atomic Physics>Exercise (Analytical Questions)>Q 13

The electron of a hydrogen atom revovles round the proton in a circular n^th orbit of radius

r_{n} = \frac{ε_{0} n^{2} h^{2}}{(π m e^{2})}

with a speed

υ_{n} = \frac{e^{2}}{2 ε_{0} n h}

. The current due to the circulating charge is proportional to