Nuclear fusion is common to the pair
| (a) Thermonuclear reactor, uranium based nuclear reactor |
| (b) Energy production in sun, uranium based nuclear reactor |
| (c) Energy production in sun, hydrogen bomb |
| (d) Disintegration of heavy nuclei, hydrogen bomb |
(c) Energy production in sun, hydrogen bomb
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The ratio of longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is
|
(a) |
(b) |
(c) 25 |
(d) |
The chromatic Aberration in lenses becomes due to
|
(a) Disimilarity of main axis of rays |
|
(b) Disimilarity of radii of curvature |
|
(c) Variation of focal length of lenses with wavelength |
|
(d) None of these |
The angle of polarisation for any medium is 60o, what will be critical angle for this
(a)  
|
(b) 
|
(c) |
(d) |
