Q. 104.8( 9 Votes )

Take a blight met

Answer :

When the bright metal ball is made black with soot in candle flame the air enters the space between the soot and metal ball.

• Light passes from the denser medium (water) to the rarer medium (air).

• When the angle of incidence exceeds the critical angle, the total internal reflection takes place.

• The ball appears to be shining due to total internal reflection.

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