Physics MCQs

Page No. 13

Ratio of the weight of H-atom to that of an electron is approximately______________?


a18.336


b1836


c18360


d183.6


View Answer 1836

Michelson calculated the speed of light using the instruments______________?


a spectrometer


bgalvanometer


cinterferometer


dnone of these


View Answer spectrometer

The equation θ = 1.22 λ/D was devised by_______________?


aNewton


bEinstein


cRaleigh


dPlanks


View Answer Raleigh

A convex lens acts as a diverging lens if the_________________?


aobject is beyond C


bif the object is with in C


cif the object is within f


dboth B and C


View Answer both B and C

Michelson devised the formula to calculate the speed of light_______________?


aC = 4fd


bC = 8fd


cC = 16fd


d C = 5/2fd


View Answer C = 16fd

In optic fiber transmission the repeater are separated through a distance of __________ km in newer system?


a300km


b 200km


c100km


d20km


View Answer 100km

The function of collimeter in spectrometer is________________?


ato produce parallel beams of light


b to filter the light rays


c to make them


dno function



Errors in the transmission of power through optic fiber can be minimized by using a______________?


a Multimode index fiber


bGraded index fiber


cSingle mode step index fiber


dCopper wire


View Answer Graded index fiber

Magnification of the astronomical telescope is_____________?


afo+fe


bfo/fe


cfe/fo


d(1+fo/fe)L/fo


View Answer fo/fe

In optic fiber transmission system _____________ are used regenerate the dim light signal?


aDiodes


b Repeaters


cLaser


dTransformer


View Answer Repeaters

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