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A : Light added to light can produce dar...

A : Light added to light can produce darkness.
R : The destructive interference of two coherent light sources may give dark fringe.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true and R is not the correct explanation of A

C

A is true and R is false

D

Both A and R are false

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-WAVES OPTICS-EXERCISE -IB (ASSERTION AND REASON)
  1. A : If the whole apparatus of Young.s experiment is immersed in liquid...

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  2. A : In Y.D.S.E., if distance of screen (D) is very large compared to t...

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  3. A : Light added to light can produce darkness. R : The destructive i...

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  4. A : In Young.s double slit experiment, we observe an interference patt...

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  5. A : Young.s double slit experiment can be performed using a source of ...

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  6. A : For best contrast between maxima and minima in the interference pa...

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  7. A : In Young.s double slit experiment, the fringes become indistinct i...

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  8. A : When a light wave travels from a rarer to a denser medium, it loos...

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  9. Assertion The pattern and position of fringes always remain same even ...

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  10. A : Y.D.S.E, as the source slit width increases, fringe pattern gets l...

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  11. A : For interference fringes to be seen, the condition (s)/(S) lt (lam...

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  12. Statement-1: In Young's double slit experiment the two slits are at di...

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  13. A : When the coherent sources are far apart, interference pattern cann...

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  14. Assertion : When a thin transparent sheet is placed in front of both t...

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  15. A : The soap film in sun light is colourful. R : Thin films produce ...

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  16. A : Thin films such as soap bubble or a thin layer of oil on water sho...

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  17. Assertion:- Newton's rings are formed in the reflected system. When th...

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  18. Assertion (A) : The film which appears bright in reflected system will...

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  19. A : If a thin soap film is arranged vertically the spectrum of coloure...

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  20. Radio waves diffract around building, although light waves do not. The...

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