Wave OpticsMedium
Question
Resultant amplitude in a negative zone plate is :
Options
A.R1 − R2 + R3 − R4 + R5 − R6 + .......
B.R2 + R4 + R6 + R8 + .......
C.− R2 + R4 − R6 + R8 ..................
D.− R1 − R3 − R5 − R7 ..................
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