Which of the following statements regarding light passing through a single apert

Question

Which of the following statements regarding light passing through a single aperture In FALSE? The dimensions of the aperture determine the size and shape of the light that Is transmitted through the aperture Smaller wavelengths of light cause the projected bright spot(s) to be smaller Is size Only one bright spot Is produced Light passing through an aperture always Introduces some distortion Circular apertures produce larger projected bright spot(s) than rectangular apertures of similar widths When you first observe a wave, It is at a zero point and approaching a maximum negative displacement of 3 meters. The wave completes one cycle every 0.02 seconds and has a wave vector of 16pi rad/m. Write down an equation that describes this wave as a function of position and time In the simplest form possible.

Explanation / Answer

since wave is moving in negative direction , the position of the wave is

if the wave moves to the left with a speed v , the wave funtion at some later time t is

y(x,t) =A sin ( 2 pi / lamda( x+ vt))

v = Lamda/ T

y = A sin ( 2 pi ( x/ lamda + t/ T)

= 3 m sin ( 16 pi rad/m x + t/0.02 s)

As per guide lines I worked first problem

  

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