Teaching Bihar D.El.Ed Mock Test Series 2024-25 General Science Physics Optics

ନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁଟି ସର୍ଚ୍ଚ ଲାଇଟ୍ ରେ ପ୍ରତିଫଳକ ଭାବରେ ବ୍ୟବହୃତ ହୁଏ?

1
ଅବତଳ ଲେନ୍ସ 
2
ସମତଳ ଦର୍ପଣ 
3
ଅବତଳ ଦର୍ପଣ 
4
ଉତ୍ତଳ ଦର୍ପଣ |
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