Related Questions

দুটি সুসঙ্গত উৎস থেকে λ দৈর্ঘ্যের দুটি তরঙ্গ সমদশায় বের হয় । একটি বিন্দুতে যেখানে তরঙ্গ দুটি মিলিত হয় সেখানে তাদের দশা পার্থক্য 90° । তরঙ্গ দুটির অতিক্রান্ত পথ পার্থক্য তখন কত ? ( Two coherent sources emit waves of wavelength λ which are in phase. which are in phase. The two waves meet at a point where they have a phase difference of 90°. Which of the following could be the traversed path difference between the waves?)
A 2λ
B λ
C λ/2
D λ/4
Cohesion and coherence is essential in :
A Letter
B Narration
C Preposition
D Paragraph
Cohesion and Coherence is essential in:
A Letter
B Narration
C Preposition
D Paragraph
Choose the correct Synonym of Coherence.
A Tnconsistence
B integrity
C Straight
D Obvious
Cohesion and coherence ts essential in-
A letter
B narration
C preposition
D paragraph
Cohesion and coherence is essential for a.......
A formal letter
B paragraph
C summary
D all
The coherence length over which there is a strong relationship between amplitudes is;
A Directly proportional to the bandwidth
B Inversely proportional to the bandwidth
C The square of the bandwidth
D None of these
'Cohesion' and 'Coherence' are essential in-
A Narration
B Personal Letter
C Paragraph
D Report
Two waves of the same frequency have opposite phase when the phase angle between them is
A 360°
B 180°
C 90°
D 0°
If two sine waves of the same frequency have a phase difference of JT radians, then
A Both will reach their minimum values at the same instant
B Both will reach their maximum values at the same instant
C When one wave reaches its maxi¬mum value, the other will reach its minimum value
D None of the above

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