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Physics Chemistry

Entry Test MCQ :: Physical Optics

  Central spot of Newtons rings
[A]. bright[B]. dark for large wavelength
[C]. dark[D]. bright for large wavelength

Answer: Option A

mubarra aqeel; said:    
no its dark spot

aleena said:    
yes its dark spot

Hamza said:    
it is dark spot.....

rooma said:    
central spot is always dark due to difference of 1/2 wavelength

FATIMA said:    

ibrar hussain korai said:    
the central spot of newton circular rings is always dark ,due to the phase reversal it must be dark

malaikar said:    
im sure its dark

Gahzal said:    
its correct answer should be dark

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