Author Topic: Physics ppr1 doubts  (Read 2746 times)

Offline astarmathsandphysics

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Re: Physics ppr1 doubts
« Reply #15 on: November 12, 2009, 12:18:03 pm »
wait I will check.

Offline astarmathsandphysics

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Re: Physics ppr1 doubts
« Reply #16 on: November 12, 2009, 12:20:21 pm »
yes right. The cathode is heated so electrons are emitted aided by being heated. I will check on the anode being cooled.

Offline astarmathsandphysics

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Re: Physics ppr1 doubts
« Reply #17 on: November 12, 2009, 12:23:30 pm »
The anode is cooled so it DOES NOT emit electrons by thermionic emmision

Offline nits94

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Re: Physics ppr1 doubts
« Reply #18 on: November 12, 2009, 03:40:33 pm »
guess it shud be A

 any how the current is (direction) the magnetic field is still dere na, so it attracts the soft iron
It is A. Iron is easily magnetized so is always attracted to a magnetic field
ya the ans is A...Thanks :) :)
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Offline Ghost Of Highbury

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Re: Physics ppr1 doubts
« Reply #19 on: November 12, 2009, 03:41:06 pm »
welcome
divine intervention!

Offline @d!_†oX!©

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Re: Physics ppr1 doubts
« Reply #20 on: November 12, 2009, 03:45:11 pm »
hey guys this one please:

s08/qp1/ques38


it says that the beta particles are electrons(which i right) and it is emitted from the nucleus
can u explain the latter(bolded)
AAL IZZ WELL!!! ;)

Offline Ghost Of Highbury

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Re: Physics ppr1 doubts
« Reply #21 on: November 12, 2009, 04:05:37 pm »
hey guys this one please:

s08/qp1/ques38


it says that the beta particles are electrons(which i right) and it is emitted from the nucleus
can u explain the latter(bolded)

definitely from the nucleus, because beta particles are fromed when neutron splits. neutron in nucleus. simple..
divine intervention!

Offline Trinion

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Re: Physics ppr1 doubts
« Reply #22 on: November 12, 2009, 07:01:34 pm »
When beta decay occurs, a neutron turns into a proton, antineutrino and an electron. The electron does NOT come from the orbit in this case.

Offline astarmathsandphysics

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Re: Physics ppr1 doubts
« Reply #23 on: November 12, 2009, 10:43:43 pm »
The equation is neutron>proton+electron+antineutrino and the reaction happens in the nucleus

Offline @d!_†oX!©

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Re: Physics ppr1 doubts
« Reply #24 on: November 13, 2009, 05:42:02 am »
thanks aadi, trinion and astar!!
AAL IZZ WELL!!! ;)