A thin beam of n identical positively charged particle are constrained to move in a circular orbit of radius R in a particle accelerator. Each particle has charge q and mass m and the current in the circular orbit is `I_(0)`. The magnetic flux through the circular path is made to increases at a constant rate of `beta Wb s^(–1)`. Calculate the current after the particles complete one turn.
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The de Broglie wavelength of an electron moving in a circular orbit is `lambda` . The minimum radius of orbit is :
Correct Answer - B We know `2 pir=nlambda` For minimum radius `n=1` `2pir_("min")=lambda` `r_("min")=lambda/(2pi)`
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When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe(OH)_(3)` sol in suitable amounts :
Correct Answer - A::B Positive and negative sol will precipitate each other.
2 Answers 1 views
The clouds consist of charged particles of water dispersed in air. Some of them are +vely charged, other are -vely charged. When +vely charged clouds
Correct Answer - A `AgNO_(3)("excess")+KI rarr Agl overset(+AgNO_(3) ("remaining"))(rarr)AgI//Ag^(+)`
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Velocity of a particle moving in a straight line varies with its displacement as `v = sqrt(4+4x)m//s` where x is displacement. Displacement of particl
Correct Answer - 8 `underset(0)overset(x)int(dx)/(2sqrt(1+x))=underset(0)overset(2)intdt` `(sqrt(1+x))_(0)^(x)=(2)` `sqrt(1+x)-1=2` `1+x=9` x = 8
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A particle starts moving on circular path of radius `(9)/(4)m` with tangential acceleration `3ms^(-2)`. Find angle between acceleration of the particl
`v=u+at=0+3xx1=3 ms^(-1)` `a_(c)=(9)/(9//4)=4` `a_(r)=3` `a=sqrt(3^(2)+4^(2))=5` Required angle `=37^(@)`
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When a charged particle is projected perpendicular to the magnetic field, the force acting on the charged particle is……………of the radius of circular pa
Correct Answer - independent, depends upon
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A uniformly charged sphere has charge Q. An electron (charge – e, mass m) revolves around it in a circular orbit of radius r. (a) Write the total ener
Correct Answer - (a). `-(Qe)/(8pi in_(0)r)` (b). 8T
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A positively charged particle having charge `q_1 = 1 C` and mass `m_1 =40 gm` is revolving along a circle of radius `R=40 cm` with velocity `v_1 = 5 m
Correct Answer - [(0.2m, 0.2m, 0.2 m)]
2 Answers 1 views
A metal plate of radius 20 cm is charged positively to a potential of 6000 volts and placed at a distance of 5 cm from a parallel earth connected plat
Correct Answer - `8xx10^(-3)`N
2 Answers 1 views
A body charged positively is considered to be at a `"______"` potential and a body that is charged negatively is considered to be at a `"______"` pote
Correct Answer - higher, lower
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