In air all colours propagate (a) with different speed (b) nearly same speed (c) with minimum speed of red colour (d) with maximum speed of violet colour

In air all colours propagate (a) with different speed (b) nearly same

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In air all colours propagate (a) with different speed (b) nearly same speed (c) with minimum speed of red colour (d) with maximum speed of violet colour

In air all colours propagate
(a) with different speed
(b) nearly same speed
(c) with minimum speed of red colour
(d) with maximum speed of violet colour

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