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CBSE Class 12-science Answered

Cadmium rods increase the reactor power when they go in, decrease when they go outward.True or false
Asked by tangocharliee | 10 Dec, 2009, 08:11: AM
Expert Answer

Cadium is a good absorber of neutron, so cadmium rods are used as controlling rods to control the rate of fission. They are pushed inside to decrease the rate or fission or pulled out to increase the rate of fission.

Answered by | 10 Dec, 2009, 04:05: PM
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CBSE 12-science - Physics
consider a hypothesis H-like atom, the wavelength in Amstrong for the spectral lines for the transition from n=p to n=1 is given as  wavelength =1500p^2/p^2 -1 where p>1 find the minimum and maximum wavelength
Asked by Akshatkuma2004 | 04 Jul, 2021, 04:04: PM
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CBSE 12-science - Physics
A loop of irregular shape carrying current is located in an external magnetic field. If the wire is flexible, why does it change to a circular shape?
Asked by kbsahilsid18 | 13 Aug, 2020, 10:02: AM
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CBSE 12-science - Physics
Why emission spectra are seen in only those gases which have low density or low number of collisions?
Asked by rsrakesh932 | 12 Jun, 2020, 04:38: PM
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CBSE 12-science - Physics
At stopping potential does the work function becomes zero?
Asked by jabreshwar1008 | 28 Dec, 2019, 08:59: PM
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CBSE 12-science - Physics
How to obtain bright fringes by young double slit experiment. ??
Asked by yadavnitish688 | 14 Dec, 2019, 06:04: AM
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CBSE 12-science - Physics
What is the radius of an electron?
Asked by sidiz.shrestha07 | 26 May, 2019, 06:42: AM
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CBSE 12-science - Physics
THE VALUE OF GROUND  STATE ENERGY OF HYDROGEN ATOM IS -13.6eV WHAT DOES THE NEGATIVE SIGN SIGNIFY AND HOW MUCH ENERGY IS REQUIRED TO TAKE AN ELECTRON IN THIS ATOM FROM GROUND STATE TO THE FIRST EXCITED STATE ?
Asked by pardeepkumar2281 | 28 Feb, 2019, 07:24: PM
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CBSE 12-science - Physics
What is the order of velocity of an electron in H atom in ground state ?
Asked by pradeepjsme | 30 Jan, 2019, 03:54: PM
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CBSE 12-science - Physics
What is the order of velocity of an electron in a H-atom in ground state?
Asked by pradeepjsme | 30 Jan, 2019, 03:51: PM
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CBSE 12-science - Physics
Using de Boglie's hypothesis, explain with the help of a suitable diagram, Bohr's second postulate of quantisation of energy levels in a hydrogen atom.
Asked by rohitraman1115 | 14 Jan, 2019, 12:02: PM
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