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High School/JEE/NEET/IPhO Physics | 17-19 Yrs

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  1.  
    2. Regarding a question in quset1, it was given that point of minimum intensity in diffraction pattern is not perfectly dark. How is that possible given that intensity is k(sinb/b)^2, and thus when sinb =0 , intensity also is zero.
    3 years ago by Achinthya Hebbar S

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  2.  
    3. Sir, what is the main reason behind different fringe width in diffraction&how the width of fringe is decided to be same or different in interference and diffraction Sir, how we determine the width of the fringe will be same or different in interference and diffraction and reason behind it ?
    3 years ago by Abhinav Kumar

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  3.  
    4. If a wave travels more path how do you say it lags or leads in phase please Explain. Please. 4:20
    5 years ago by undefined

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  4.  
    5. sir after introducing the lens the intensity at point P should increase as the lens converges the light beams, then why the intensity remains same
    5 years ago by Tushar Sharma

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  5.  
    6. what causes light rays to bend in diffraction i mean why light rays bend around the boundaries of small hole
    5 years ago by Tushar Sharma

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  6.  
    7. respected sir , what is beta and should it be in radian or degrees
    5 years ago by undefined
    Ans 1 ->
    Everything is always in radians.
    5 years ago by Soham Biswas

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  7.  
    8. sir please specify how (N-1)d = b
    5 years ago by undefined

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  8.  
    9. sir how many questions we should solve from a chapter for physics jee?
    5 years ago by Yash Agarwal

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  9.  
    10. can yon translated it to Arabic ,please ???
    6 years ago by شهاب ش

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  10.  
    11. In a single slit diffraction of light of wavelength ? by a slit of width e, the size of the central maximum on a screen at a distance b is (A)2b? e (B)(2b?)/e (C)[(2b?)/e] e (D)[(2b?)/e]-e
    6 years ago by Deepak

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  11.  
    12. Sir,the graph you are talking is not being displayed on the screen.
    6 years ago by Akshunn Trivedi

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  12.  
    13. Sir PLEASE CLEAR MY DOUBT THAT IF 0=ZERO then Beta=zero then if we put it in relation of Ir and Io then how will it become one not zero?
    7 years ago by Vinay Dayal
    Ans 1 ->
    havent you studied limits may dear friend
    7 years ago by Nirav Bhandari
    Ans 2 ->
    Dude here 0/0 is called an indeterminate form... that is it doesn't correspond to any value.. However when we consider this case under a limit.. it turns out to be 1.. Limit of sin(x)/x when x tends to zero is 1... Check it for yourself... it's very interesting..
    7 years ago by Ratnajadit

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  13.  
    14. in interference its said all fringes are of same intensity..but is it so? as the phase difference between the sources changes..the final intensity on screen changes...please explain
    8 years ago by mayukh sengupta
    Ans 1 ->
    Dude... u are right... phase changes for different positions... but, remember?... intensity is related to cosine of phase change... these values are same and hence, intensities are same
    7 years ago by Ratnajadit

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  14.  
    15. Where can we see full circle of rainbow ??
    8 years ago by Sanchit Agrawal
    Ans 1 ->
    in sky
    6 years ago by Kranti Veer Nagar

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  15.  
    16. WHY DOES THE WIDTH OF FRINGES GO ON DECREASING IN A DIFFRACTION PATTERN , THE CENTRAL MAXIMA HAS A DIFFERENT WIDTH THAT IS OKAY BUT WHY IS THE WIDTH OF OTHER FRINGES NOT CONSTANT EVEN WHEN THE MINIMA ARE AT N LAMDA ONLY?
    8 years ago by Tanisha Aggrawal
    Ans 1 ->
    Dude... for all minimas, beta=m(pi)... As for all these values, sine(beta) is same and beta is different, intensity varies... that is intensity decreases with increase in beta...
    7 years ago by Ratnajadit

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  16.  
    17. why the light bend to the edge of obstacle. is there any special condition?
    9 years ago by Vibhu Sharma
    Ans 1 ->
    This is due to diffraction of light... it is perceptible more if the obstacle size is of the order of wavelength of light.
    9 years ago by Physics Galaxy

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  17.  
    18. Sir, Whats the best way to revise things ?
    10 years ago by Ankit Agrawal
    Ans 1 ->
    For theory - you need to repeatedly review content from various references and gradually you will be able to frame your own language for it.... For Problems - try to make regular short notes for the concepts in different problems for each topic and review these on weekly basis...
    9 years ago by Physics Galaxy

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