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Inflammation of cornea due to high dose ...

Inflammation of cornea due to high dose of UV is called :  

A

Throat infection

B

Color blindness

C

Snow blindness

D

Spondolitis

Text Solution

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The correct Answer is:
C
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Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

Scientists are working hard to develop nuclear fusion reactor Nuclei of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy. In the core of fusion reactor, a gas of heavy hydrogen of _(1)^(2) H is fully ionized into deuteron nuclei and electrons. This collection of _1^2H nuclei and electrons is known as plasma . The nuclei move randomly in the reactor core and occasionally come close enough for nuclear fusion to take place. Usually , the temperature in the reactor core are too high and no material will can be used to confine the to plasma for a time t_(0) before the particles fly away from the core. If n is the density (number volume ) of deuterons , the product nt_(0) is called Lawson number. In one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following boltzmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fusion reactor at temperature energy T are moving toward each other, each with kinectic energy 1.5 kT , when the seperation between them is large enough to neglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

Near-sightedness arises due to more curvature of the cornea or due to the eye lens remaining thick permanently.

KUMAR PRAKASHAN-ENVIRONMENTAL ISSUES-Section - F (Multiple Choice Question (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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  2. Which of the following cannot be associated with deforestation ?   (A...

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  3. Inflammation of cornea due to high dose of UV is called :

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  4. Which of the following statement is correct for Ozone layer depletion ...

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  5. In which year "Chipko Movement" started ?   (A) 1972 (B) 1973 ...

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  6. Aquatic weed is ......

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  7. Any undesirable change in physical, chemical on biological characteris...

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  8. Make correct pair.

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  9. It is not a features of the polymer waste bitumen mix road :

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  10. In a scrubber, the exhaust is passed through a :

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  11. Noise pollution is caused by sound of .......

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  12. Which of the following is caused by air pollution ?

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  13. What do you mean by Biological Oxygen Demand (BOD) ?

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  14. Which of the following happens in third phase of waste water treatment...

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  15. Assertion : As the amount of dissolved oxygen in water decreases, BOD ...

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  16. Find the mismatch pair.   (A) Consumption of fossil fuel - Release of...

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  17. Increase in the concentration of substances at each trophic level of f...

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  18. Which gas is lighter than air?

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  19. A: The soure of air pollution are natural as well as anthropogenic. ...

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  20. Which of the following is incorrect with regard to CNG ?   (A) It bur...

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