railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Science Physics Optics

ଧଳା ଆଲୋକର ନିମ୍ନ ରଙ୍ଗ ମଧ୍ୟରୁ କେଉଁଟି ପ୍ରିଜିମ୍ ଦ୍ୱାରା ସର୍ବନିମ୍ନ ଭାବରେ ବିଛୁରଣ ହୁଏ?

1
କମଳା 
2
ସବୁଜ
3
ନୀଳ
4
ହଳଦିଆ
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