Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 186

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Particle wave has wavelength of the order of

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Important Questions on Atoms, Molecules and Nuclei

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 187

The de-Broglie wavelength of a particle with mass

1 g

and velocity

100 m s^{- 1}

is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 188

The circumference of an electron orbit in a hydrogen atom is related to De-Broglie wavelength of the electron in the same orbit as

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 189

A body of mass

100 g

moves at the speed of

36 km h^{- 1}

. The de Broglie wavelength related to it is of the order _________

m

(h = 6.626 \times 10^{- 34} Js)

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 190

Which of the following figures represent the variation of the particle 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 191

A charged particle is accelerated from rest through a certain potential difference. The de-Broglie wavelength is

λ_{1}

when it is accelerated through

V_{1}

and is

λ_{2}

when accelerated through

V_{2}

. The ratio

\frac{λ_{1}}{λ_{2}}

is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 192

The energy that should be added to an electron to reduce its De-Broglie wavelength from

1 nm

to

0.5 nm

is

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Physics Crash Course MHT-CET>Chapter 23 - Atoms, Molecules and Nuclei>Exercise 1>Q 193

A photo sensitive metallic surface emits electrons when X-rays of wavelength $' λ'$ fall on it. The de-Broglie wavelength of the emitted electrons is (Neglect the work function of the surface, $m$ is mass of the electron. $h =$ Planck's constant, $c =$ velocity of light

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

An electron of mass 'm' has de-Broglie a wavelength