002 10.0 points A laser beam of wavelength 621 nm is incident on two slits 5.28

Question

002 10.0 points A laser beam of wavelength 621 nm is incident on two slits 5.28 m Approximately how far apart will be the bright interference fringes screen? on the viewing Answer in units of m 003 10.0 points A lecturer is demonstrating two-slit inter ference with sound waves Two speakers are used, 1.9 m apart. The sound frequency is 1180 Hz and the speed of sound is 343 m/s. Students sit facing the speakers in a row of seats 5.1 m away. Along the row of students, what is the spac- ing between the locations on either side of the center line between the speakers where no sound is heard because of destructive interfer-

Explanation / Answer

Here,

2)

screen distance , D = 5.28 m

wavelength = 621 nm

for the distance between the maximas

y = wavelength * D/d

y = 621 *10^-9 * 5.28/(0.2 *10^-3)

y = 0.0164 m

the distance between the maxima is 0.0164 m

3)

wavelength of sound wave = 343/1180 m

wavelength of sound wave = 0.291 m

d = 1.9 m

D = 5.1 m

distance between the minimas = wavelength * D /d

distance between the minimas = 0.291 * 5.1/1.9

distance between the minimas = 0.781 m

the distance between the minimas is 0.781 m

4)

diffraction grating = 2420 lines/cm

distance between slits = 1/2420 cm

distance between slits = 4.132 *10^-4 cm

the distance between slits is 4.132 *10^-4 cm

Related Questions

Navigate

• Browse (All)
• Browse
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.