alleryଏକ ଗତିଶୀଳ ବସ୍ତୁର ମ୍ୟାକ୍ ସଂଖ୍ୟା (Mach number) ଏହାର ଗତିକୁ କେଉଁଥିରେ ଭାଗ କରି ପରିଭାଷିତ କରାଯାଏ?
Aଆଲୋକର ଗତି
Bଏହାର ନିଜସ୍ୱ ତ୍ୱରଣ
Cଯାତ୍ରାର ସମୟ
Dଶବ୍ଦର ଗତି
Answer & Solution
Correct answer: D. ଶବ୍ଦର ଗତି
Mach number ଏକ ବସ୍ତୁର ଗତିକୁ ସ୍ଥାନୀୟ ଶବ୍ଦର ଗତି ସହିତ ତୁଳନା କରେ।
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