Related Questions

Sound waves are ------ waves.
A transverse
B Electromagnetic
C Longitudinal
D one of these
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
Which of the following statements is not correct regarding the travel of sound waves?
A Sound waves can travel through water
B Sound waves can travel throught air
C Sound waves can travel through steel
D Sound waves can travel through vacuum
The green light only ever goes on when tank A is full and tank C isn't empty. The red light is always on unless either tank A isn't Full or tank B is empty. Given that the green light is on, we can conclude all of the following EXCEPT---
A Tank A cannot be empty
B The red light must be on
C Tank C cannot be empty
D we don't have enough information to determine whether tank B is empty or not
The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A 32%
B 40%
C 48%
D 60%
They reached home safe and sound. Here 'safe and sound' is a/an:
A adjective phrase
B adverbial phrase
C proverb
D idiom
Which from the following is true for 'Sound'?Sound cannot pass through ---.
A through gases
B through a vacuum
C through liquids
D through a soks
He sleeps a sound sleep, এখানে Sound শব্দটি
A Adjective
B Noun
C Pronoun
D Adverb
How much times a sound stay in our brain after listening the sound ?
A 1 sec
B 0.1 sec
C 0.01 sec
D 0.001 sec
He sleep a sound sleep. Here 'sound' is a /an
A adverb
B adjective
C noun
D pronoun

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