Question
Download Solution PDF________ of a wave is the velocity with which variations in the shape of modulation or envelope of the wave propagate through space.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGroup Velocity:
The group velocity of a wave is the velocity with which the overall envelope shape of the wave's amplitudes propagates through space.
Group velocity,
\({v_g} = \frac{{d\omega }}{{d\beta }}\)
Important Points
Phase Velocity:
The phase velocity of a wave is the rate at which the phase of the wave propagates in space.
Phase velocity \({v_p} = \frac{\omega }{\beta }\)
Last updated on Jul 18, 2025
-> DFCCIL Executive Answer Key 2025 has been released at its official website. Candidates can calculate their marks, estimate their scorecard with log in ID and Password.
-> The Objection window will remain open from 18th July to 22nd July 2025. Candidates can raise their objection with qid no. and proof.
-> The DFCCIL Rank Predictor 2025 is now available.
-> DFCCIL Executive Exam Analysis 2025 is live now. candidates can check level of exam, and estimate their score by analysing CBT 1 exam here.
-> DFCCIL Executive city intimation slip has been released.
-> DFCCIL Executive Recruitment 2025 Correction window is open from 31st March, to 4th April 2025.
-> Candidates can make corrections in their application form, if they have made any mistake. There will be 100/- fee for correction in form.
-> DFCCIL Executive Recruitment 2025 application deadline has been extended.
-> Eligible and Interested candidates had applied from 18th January 2025 to 22nd March 2025.
-> A total of 175 Vacancies have been announced for multiple posts like Executive (Civil, Electrical, Signal and Telecommunication).
-> Candidates who will get a successful selection under the DFCCIL Recruitment 2025 for the Executive selection process will get a salary range between Rs. 30,000 to Rs. 1,20,000.
-> Candidates must refer to the DFCCIL Executive Previous Year Papers to prepare well for the exam.