NTPC CBT-2 Physics Quiz - 49

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Question 1:

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

Question 2:

Photon of which light has maximum energy?

Question 3:

What is the unit of the force ?

Question 4:

Which one of the following types of waves are used in a night vision apparatus?

Question 5:

Light beam which is highly directional is called ?