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1)why did an empty test tube placed obliquely in water,appears filled with mercury when seen from above?

2)why are bubbles rising up in the fish tank appear silvery??
#)why does crack in a window pane appear silvery??
want atleast 5 points for each question
plz mrk it as th e best
ill try
it depends on the other ans
u'll mrk it okh....


Soory I can't give u 5 points of each

Q-1-why does crack in a window pane appear silvery?

this is due to total internal reflection and wave theory of light.

why are bubbles rising up in the fish tank appear silvery

bubbles rising up in a fish tank appear silvery air bubbles trapped in a glass paper weight appear silvery a crack in a window pane appears silvery top surface of water contained in a beaker and held above the eye level appears silvery how is totally reflecting prism is used as an erecting prism what do you understand by the term angle of minimum deviation ? in this position how is the angle of incidence related to angle of emergence
1 5 1
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