Which of the following is correct about mechanical waves?
Athey require a medium to propagate
Bthey don’t require a medium to propagate
Cmay or may not require a medium to propagate
DNone of the above
Athey require a medium to propagate
Bthey don’t require a medium to propagate
Cmay or may not require a medium to propagate
DNone of the above
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സമതല ദർപ്പണത്തിൽ രൂപപ്പെടുന്ന പ്രതിബിംബത്തിൻറെ സവിശേഷത അല്ലാത്തത് ഏവ ?