Young’s double slit experiment was performed with monochromatic light of blue colour. The experiment was then repeated, first with light of red colour and then with light of yellow colour. Which colour produces interference pattern with maximum fringe separation (i.e., fringe width)?
Young’s double slit experiment was performed with monochromatic light of blue colour. The experiment was then repeated, first with light of red colour and then, with light of yellow colour then on decreasing the π the fringe and the angular fringe-width the red colour will give interference pattern with maximum fringe separation then blue and yellow colour.
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15.
Calculate dispersive power of glass, accurately up to decimal places, from the following data:
Refractive index of glass for red colour = 1.60
Refractive index of glass for yellow colour =1.61
Refractive index of glass for violet colour = 1.62
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16.De Broglie wavelength of electrons of kinetic energy E is λ. What will be its value if kinetic energy of electrons is made 4E?
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17.How much energy will be created if 1 g of matter is destroyed completely?
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18.Complete the following nuclear reaction:
+ ......
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19.State one important use of a Zener diode.
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20.Draw a labelled graph of voltage versus time for a signal voltage used in digital circuits.