NTPC CBT-2 Physics Quiz - 31

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Question 1:

An ideal black body has the property of -

Question 2:

In which of the following media does sound travel the fastest?

Question 3:

An egg when placed in ordinary water, it sinks but floats when placed in brine. This is because- ?

Question 4:

The direction of acceleration in uniform circular motion is along the-

Question 5:

Why does the boiling point of water decrease at higher altitudes?