What is the principle of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§The Johansson Mikrokator‚Äö√Ñ√∂‚àö√ë‚àö¬•?$

Button spinning on a loop of string

What is the principle of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§T

1.	What is the principle of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§The Johansson Mikrokator‚Äö√Ñ√∂‚àö√ë‚àö¬•?$
A.	Button spinning on a loop of string
B.	Principle of interference
C.	Optical magnification
D.	Principle of transformer
Answer» B. Principle of interference