Question

1) answer the following multiple choice answers

a) Diffraction by a single slit in a ripple tank can be decreased by

a) increasing the frequency of the source

b) decreasing the width of the slit

c) using a longer wavelngth

d) increasing the amplitude of the waves

e) decreasing the distnce between the wave generator and the slit

b) two point sources are vibrating out of phase producing two-dimensional water wave interference, the second nodal line on either side of the central maxiumum will occur ar locations where the path difference of the arriving waves is

a) wavelength (lamda)

b) (wavelenth (lamda))/2

c) 2 x wavelength (lamda)

d) (3 x wavelenfth (lamda))/2

c) in a two point, in phase interference patten, increasinf the wavelength of the two sources increases the number of nodal lines.

a) true

b) false

d) the wavelength of green light is 5.0x10^-7m in air, what is it's frequency?

Answer 1

a) Diffraction by a single slit in a ripple tank can be decreased by increasing the frequency of the source

option (a)

b) two point sources are vibrating out of phase producing two-dimensional water wave interference, the second nodal line on either side of the central maxiumum will occur at locations where the path difference of the arriving waves is given as (2n-1)(lamba)/2

so for second nodal line put n= 2

that is 3(lamba)/2

option d(

d) (3 x wavelenfth (lamda))/2

c) in a two point, in phase interference patten, increas in the wavelength of the two sources will actually decreases the number of nodal lines.

so the given statement was false

d) frequency= velocity/wavelength

f= (3×10^8)/(5×10^-7) = (6×10^14) Hz

Please rate it up, Thanks!