Physics MCQs

852 MCQs  (Page 68 of 86)

Thermocouples convert___________________?
A. Heat energy into electrical energy
B. Heat energy into light energy
C. Heat energy into mechanical energy
D. Mechanical energy into heat energy
Beats are the results of____________________?
A. Diffraction of sound waves
B. Constructive and destructive interference
C. Polarization
D. Destructive interference
Doppler effect applies to____________________?
A. Sound wave only
B. Light wave only
C. Both sound and light waves
D. Neither sound nor light wave
In open organ pipe___________________?
A. Only even harmonics are present
B. Only odd harmonics are present
C. Both even and odd harmonics are present
D. Selected harmonics are present