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
Sound waves are ------ waves.
A transverse
B Electromagnetic
C Longitudinal
D one of these
Which of the following statements is correct about sound waves and light waves?
A Both transverse waves
B Both longitudinal waves
C Sound waves are transverse waves and light waves are longitudinal waves
D Sound waves are longitudinal and light waves are transverse waves
Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
sounds waves are -- waves
A transverse
B Electromagnetic
C Longitudinal
D none of these
The higher the wind speed and the longer the fetch or distance of open water across which the wind blows and waves travel, the ____ waves and the ____ energy they process.
A larger, more
B larger, less
C smaller, more
D smaller, less
The ridges of the waves are where the jet stream of waves closes to the
A poles
B equator
C prime meridian
D None of the above
The troughs of the waves are where the jet stream of waves is closest to the
A poles
B equator
C Prime meridian
D None of the above
If there is nothing to absorb the energy of sound waves, they travel on ----, but their intensity--- as they travel further from their source.
A erratically-mitigates
B eternally-alleviates
C forever-increases
D steadily-stabilized
Ultrasonic waves are beyond the range of sound a human can hear.
A outside
B with
C over
D around

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