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
Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.
A Ideal
B Real
C Isotonic
D None of these
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in
A Viscosity with concentration
B Degree of ideality of the solution
C Both A & B
D Neither A nor B
The gypsys are a tribe of strange people. They do not have any fixed home but wander about from place to place and live in tents. they were originally natives of India. But as they reached England from Egypt ,the English took them from Egyptians. this is why they came to be called gypsys. they were beloved to possess strange powers. they could tell your fortune by reading the palm of your hand. it was thought they stole little children to train them in their way of life. whenever a child got lost it was thought that it has been carried away by gypsys so they were arrested and sent for trial. but this attitude towards the Gypsy has gradually changed.The gypsies are people who ---
A have a settled way of life
B came originally from Egypt to England
C are always on the move
D steal children to train them in the way of life
Ultrasonic waves are beyond the range of sound a human can hear.
A outside
B with
C over
D around
Gandhi had given out the stirring call of 'Do or Die' during the __________ Movement
A Non-cooperation
B Khilafat
C Civil Disobedience
D Quit India
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
Solutions having the same osmotic pressure are called __________ solutions.
A Dilute
B Ideal
C Isotonic
D Saturated
আবেদ ও তার ৮ জন বন্ধু একটি কোম্পানি গঠনের উদ্দেশ্যে Finest Solutions এর শরণাপন্ন হয়। উক্ত প্রতিষ্ঠানটি নির্দিষ্ট ফি-এর বিনিময়ে কোম্পানি গঠনের যাবতীয় আনুষ্ঠানিকতা পালনে চুক্তিবদ্ধ হয়। Finest Solutions এখানে কার ভূমিকা পালন করবে? 
A নিবন্ধক
B অংশীদার
C পরিচালক
D প্রবর্তক
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

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