engineering recuitment NPCIL Plant Operator Mock Test Physics Optics Refraction and Reflection

ଧଳା ଆଲୋକ ର ପ୍ରକୀର୍ଣ୍ଣନ ସମୟ ରେ, _____ ଆଲୋକ ଅଧିକ ବଙ୍କା ହୁଏ ।

1

ନୀଳ

2

ବାଇଗଣୀ

3

ସବୁଜ

4

ନାଲି

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