Question

What is the equivalent resistance between A and B

(a)  

(b)  

(c)  

(d) 2R

Answer

(c)  

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image

 Pick out the correct increasing order of energy of electromagnetic waves from the following:
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In an hydrogen atom, the electron revolves around the nucleus in an orbit of radius 0.53 . Then the electrical potential produced by the nucleus at the position of the electron is

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Assertion   :   Charge is invariant.

Reason      : Charge does not depends on speed of frame of reference.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

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(d) If the assertion and reason both are false.