Physics
At hill stations, the boiling point of water will be

More than that at sea level
Equal to the melting point of ice
Same as at sea level
Less than that at sea level

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Physics
In total internal reflection, the light travel from

Denser to rarer medium and it occurs with loss of intensity
Rarer to denser medium and it occurs with loss of intensity
Rarer to denser medium and it occurs with no loss of intensity
Denser to rarer medium and it occurs with no loss of intensity

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