Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 194

EASY

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IMPORTANT

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An electron of mass 'm' has de-Broglie a wavelength $' λ'$ when accelerated through potential difference ${}^{'}V^{'} .$ When proton of mass $M^{'},$ is accelerated through potential difference ' $9 V$ ', the de-Broglie wavelength associated with it will be (Assume that wavelength is determined at low voltage) [MHT CET 2016]

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Important Questions on Atoms, Molecules and Nuclei

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IMPORTANT

Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 195

An electron of stationary hydrogen atom jumps from

4^{th}

energy level to ground level. The velocity that the photon acquired as a result of electron transition will be

(h =

Planck's constant,

R =

Rydberg's constant,

m

=

mass of photon)

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 196

When the momentum of a photon is changed by an amount

p'

, the corresponding change in the de-Broglie wavelength is found to be

0.2 %

. Then, the original momentum of the photon was

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 197

Which of the following curve denotes the change in particle's momentum and the associated de-Broglie wavelength?

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 198

For a particle of mass

m

moving with kinetic energy

E

, the de Broglie wavelength is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 199

An electron of mass

' m',

when accelerated through a potential

V

has de-Broglie wavelength

λ .

The de-Broglie wavelength associated with a proton of mass

M

accelerated through the same potential difference will be:

EASY

MHT-CET

IMPORTANT

Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 200

If the short wavelength limit of the continuous spectrum coming out of a Coolidge tube is

10 \overset{°}{A},

then the de-Broglie wavelength of the electrons reaching the target metal in the Coolidge tube is approximately:

EASY

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IMPORTANT

Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 201

A particle of mass

11 \times 10^{- 12} kg

is moving with a velocity

6 \times 10^{- 7} m s^{- 1}

. Its de-Broglie wavelength is nearly

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 202

An

α -

particle moves in a circular path of radius

0.83 cm

in the presence of a magnetic field of

0.25 Wb m^{- 2}

. The de Broglie wavelength associated with the particle will be: