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[A] : A biotic community exhibits adapti...

[A] : A biotic community exhibits adaptive radiation .
[R] : The organisms of different populations have some features in common due to the effect of the same abiotic factors of the environment .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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In some animals of different groups differents structure developed along same direction due to Adaptation to same needs this is called as :

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Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas. Q. Salt R can not be:

Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas. Q. Salt P decomposes on heating into a coloured solid, neutral gas a neutral vapour, then which of the following can not be the product of salt P after decomposition?

Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas. Q. If salt Q underrgoes redox reaction with H_(2)S in acidic medium then which of the following speies can not be possible product?

Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas. Q. If salt Q underrgoes redox reaction with H_(2)S in acidic medium then which of the following speies can not be possible product?

Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas. Q. Salt P decomposes on heating into a coloured solid, neutral gas a neutral vapour, then which of the following can not be the product of salt P after decomposition?

Two speakers separeted by some distance emit sound of the same frequency. At some point P the intensity due to each speaker separately is I_(o) . The path difference from P to one of the speakers is (1)/(2) lambda greater than that from P to the other speaker. What is the intensity at P if (a) the speakers are coherent and in phase, (b) the speakers are incoherent, and (c ) the speakers are coherent but have a phase different of 180^(@) ?

The Betatron was the first important machine for producing high energy electrons. The action of the betatron depends on the same fundamental principle as that of the transformer in which an alternating current applied to a primary coil induces an altermating current usually with higher or lower voltage in the secondary coil. In the betatron secondary coil is replaced by a doughnut shaped vacuum chamber.Electron produced in the doughnut from a hot filament, are given a preliminary acceleration by the application of an electric field having potential difference of 20 kV to 70 kV , when an alternating magnetic field is applied parallel to the axis of the tube, two effects are produced (1) an electromotive force is produced in the electron orbit by the changing magnetic flux that gives an additional energy to the electrons (2) a radial force is produced by the action of magnetic field whose direction is perpendicular to the electron velocity. Which keeps the electron moving in a circular path. Conditions are arranged such that the increasing magnetic field keeps the electron in a circular orbit of constant radius. The mathematical relation between the betatron parameters to ensure the above condition is called BETATRON condition. If the orbit radius of the circular path traced by the electron is R , magnetic field is B , speed of the electron is v , mass of the electron is m , charge on the electron is e and phi is the flux within the orbit of radius R . Then answer the following questions based on the above comprehension. What is the tangential force acting on the electron ?

The Betatron was the first important machine for producing high energy electrons. The action of the betatron depends on the same fundamental principle as that of the transformer in which an alternating current applied to a primary coil induces an altermating current usually with higher or lower voltage in the secondary coil. In the betatron secondary coil is replaced by a doughnut shaped vacuum chamber.Electron produced in the doughnut from a hot filament, are given a preliminary acceleration by the application of an electric field having potential difference of 20 kV to 70 kV , when an alternating magnetic field is applied parallel to the axis of the tube, two effects are produced (1) an electromotive force is produced in the electron orbit by the changing magnetic flux that gives an additional energy to the electrons (2) a radial force is produced by the action of magnetic field whose direction is perpendicular to the electron velocity. Which keeps the electron moving in a circular path. Conditions are arranged such that the increasing magnetic field keeps the electron in a circular orbit of constant radius. The mathematical relation between the betatron parameters to ensure the above condition is called BETATRON condition. If the orbit radius of the circular path traced by the electron is R , magnetic field is B , speed of the electron is v , mass of the electron is m , charge on the electron is e and phi is the flux within the orbit of radius R . Then answer the following questions based on the above comprehension. What is the BETATRON condition ?

TRUEMEN BIOLOGY ENGLISH-Ecology -ASSERTION AND REASON
  1. [A] : The tropical rain forests are rich in biodiversity on this biosp...

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  2. [A] : The community that ends in a succession is known as climax commu...

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  3. [A] : A biotic community exhibits adaptive radiation . [R] : The org...

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  4. [A] : Every biological system resists a change and wants to remain in ...

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  5. [A] : Allopatric species are geographically isolated whereas sympatric...

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  6. [A] : Natural populations are capable of an enormous and rapid increas...

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  7. [A] : In mutualism both the individuals are benefitted . [R] : Both ...

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  8. [A] : Stenothermal species can tolerate narrow range of temperatures ....

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  9. [A] Eurythermic plants can withstand wide range of temperature . [R...

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  10. [A] : Light is the energy which is stored as chemical energy in the fo...

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  11. [A] : Flora and Fauna of different parts of the world do not show unif...

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  12. [A] : A species is an interbreeding population which is reproductively...

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  13. [A] : Mimicry is a device adopted to protect the organism from its ene...

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  14. [A] : Biological magnification is concentration of substances instead ...

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  15. [A] : The rate of energy storage at consumer levels are referred to as...

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  16. [A] : Primary productivity is shown by green plants only . [R] : Pri...

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  17. [A] : Energy pyramid is sloping . [R] : The energy of one trophic le...

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  18. [A] : The biotic community and the non living enviroment of an ara fun...

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  19. [A] :Green plants ara secondary consumers [R]: Microconsumers break...

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  20. [A] : A food chain is a group of organism in which there is a transfer...

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