GATE (Graduate Aptitude Test in Engineering) Physics (PE): Questions 626 - 630 of 1823
Choose Programs:
📹 Video Course 2024 (354 Lectures [236 hrs : 31 mins]): Offline Support
Rs. 1460.00 -OR-
1 Month Validity (Multiple Devices)
Preview All LecturesDetails
🎓 Study Material (327 Notes): 2024-2025 Syllabus
Rs. 400.00 -OR-
3 Year Validity (Multiple Devices)
Topic-wise Notes & SampleDetails
🎯 248 Numeric, 1575 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
Rs. 550.00 -OR-
3 Year Validity (Multiple Devices)
CoverageDetailsSample Explanation
Help me Choose & Register (Watch Video) Already Subscribed?
Question 626
Appeared in Year: 2010
Question MCQ▾
A particle of mass is confined in the potential ,
Let the wavefunction of the particle be given by , where and are the eigenfunctions of the ground state and the first excited state respectively. The expectation value of the energy is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 627
Appeared in Year: 2010
Question MCQ▾
The solution of the differential equation for , subject to the initial conditions and , is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Passage
Consider the propagation of electromagnetic wave in a linear, homogeneous and isotropic material medium with electric permittivity , and magnetic permeability .
Question 628 (1 of 2 Based on Passage)
Appeared in Year: 2010
Question MCQ▾
For a plane wave of angular frequency and propagation vector propagation in the medium Maxwell՚s equations reduce to –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 629 (2 of 2 Based on Passage)
Appeared in Year: 2010
Question MCQ▾
If and assume negative values in a certain frequency range, then the directions of the propagation vector and the Poynting vector in that frequency range are related as -
Choices
Choice (4) | Response | |
---|---|---|
a. | and make an angle that depends on the magnitude of and | |
b. | and are perpendicular to each other | |
c. | and are anti – parallel | |
d. | and are parallel |
Question 630
Question MCQ▾
For a spin particle, in the eigen basis of the expectation value is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |