De-broglie Wavelength Absorb Before You Solve MCQs - Dual Nature of Radiation and Matter Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

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Physics
Dual Nature of Radiation and Matter
Absorb Before You Solve MCQs -
De-broglie Wavelength (7 Qs)

1(current)

Q. No.

Photons and electrons of the same wavelength are compared. Which one carries larger momentum?

1.	photon
2.	electron
3.	neither, since both have equal momenta
4.	it could be either, depending on the energy

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A particle is dropped from a height \(H.\) The de-Broglie wavelength of the particle as a function of height is proportional to:
1. \(H\)
2. \(H^{1/2}\)
3. \(H^{0}\)
4. \(H^{-1/2}\)

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The graph which shows the variation of de-Broglie wavelength \((\lambda)\) of a particle and its associated momentum \((p)\) is:

1.		2.
3.		4.

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What is the de-Broglie wavelength associated with an electron moving at a speed of \(5.4\times10^6~\text{m/s}\)?

1.	\(0.244~\text{nm}\)	2.	\(0.135~\text{nm}\)
3.	\(0.157~\text{nm}\)	4.	\(0.111~\text{nm}\)

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An electron (mass \(m\)) with an initial velocity \(\vec{v}={v}_0 \hat{i}\)

\(({v}_0>0)\) is in an electric field \(\vec{E}=-{E}_0 \hat{i}\)

(

\(E_0\) = constant \(>0\)). Its de-Broglie wavelength at time \(t\) is given by:

1.	\(\dfrac{\lambda_0}{\left(1+\dfrac{e E_0}{m} \dfrac{t}{{v}_0}\right)}\)	2.	\(\lambda_0\left(1+\dfrac{e E_0 t}{m {v}_0}\right)\)
3.	\(\lambda_0 \)	4.	\(\lambda_0t\)

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Photons of wavelength \(\lambda\) cause the emission of photoelectrons from a metallic surface, the de-Broglie wavelength of the fastest photoelectron being \(\lambda_d\). A graph of \(\frac{1}{\lambda} \text { vs } \frac{1}{\lambda_{d}}\) is:

1.	a straight line passing through the origin.
2.	a circle.
3.	an ellipse.
4.	a parabola.

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The de Broglie wavelength associated with an electron, accelerated by a potential difference of \(81\) V is given by:
1. \(13.6\) nm
2. \(136\) nm
3. \(1.36\) nm
4. \(0.136\) nm

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Structure of Atom
Classification of Elements and Periodicity in Properties
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Redox Reactions
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The s-Block Elements
The p-Block Elements-XI
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The Solid State
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Chemical Kinetics
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General Principles and Processes of Isolation of Elements
The p-Block Elements-XII
The d and f Block Elements
Coordination Compounds
Haloalkanes and Haloarenes
Alcohols, Phenols and Ethers
Aldehydes, Ketones and Carboxylic Acids
Amines
Biomolecules
Polymers
Chemistry in Everyday Life

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Units and Measurement
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Motion in A Straight Line
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Systems of Particles and Rotational Motion
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Kinetic Theory of Gases
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Electrostatic Potential and Capacitance
Current Electricity
Moving Charges and Magnetism
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Electromagnetic Induction
Alternating Current
Electromagnetic Waves
Ray Optics and Optical Instruments
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Dual Nature of Radiation and Matter
Atoms
Nuclei
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