Dual Nature of Matter and Radiation-De-Broglie Relation (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 2 of 2

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 268 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 1

» Dual Nature of Matter and Radiation » De-Broglie Relation

Appeared in Year: 2013

MCQ▾

Question

Photons of energy 7 eV are incident on two metals A and B with work functions 6 eV and 3 eV respectively. The minimum de Broglie wavelengths of the emitted photoelectrons with maximum energies are λA and λB, respectively where λAλB is nearly,

Choices

Choice (4) Response

a.

4.0

b.

0.5

c.

2.0

d.

1.4

Question number: 2

» Dual Nature of Matter and Radiation » De-Broglie Relation

Appeared in Year: 2016

MCQ▾

Question

Electrons accelerated from rest by an electrostatic potential are collimated and sent through a Young’s double slit setup. The fringe width is w . If the accelerating potential is doubled then the width is now close to –

Choices

Choice (4) Response

a.

0.7w

b.

2.0w

c.

1.0w

d.

0.5w

f Page
Sign In