Why can't we see a candle flame through a bent hollow pipe?
Because light travels in straight line
Because intensity of candle flame is too low
Because a candle does not radiate in visible range
None of the above
We can't see a candle flame through a bent hollow pipe because light travels in straight line only and so it cannot travel through a bent pipe.
Through which pipe will you be able to see the candle flame clearly?
Which pipe will he be able to see the candle flame clearly?