NTPC CBT-2 Physics Quiz - 24

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Question 1:

Electric cell is a device which converts chemical energy into electrical energy. Metal cap of an electric cell is the __________terminal of the cell.

Question 2:

The technique of obtaining images of heart by using reflection of ultrasonic waves from various parts of heart is called-

Question 3:

For a sound wave, frequency is 9400 Hz and speed is 282 m/s in a given medium. The wavelength of the wave is-

Question 4:

A shake is the unit of the

Question 5:

[MLT-1] is the dimension of which of the following physical quantities?