Coherent Monochromatic Light with Wavelength $\lambda$ = 633 Nm Is Incident on Two Slits That Are

question 29

Multiple Choice

Coherent monochromatic light with wavelength $\lambda$ = 633 nm is incident on two slits that are separated by a distance d = 0.050 mm.The intensity of the radiation at the central maximum on a screen 3.45 m away from each slit is 100 W/cm².At what distance from the central intensity maximum does the intensity drop to a quarter of the peak intensity value?

• A)1.8 cm
• B)1.0 cm
• C)1.5 cm
• D)2.0 cm
• E)0.50 cm

---

Definitions:

Deka-

A metric prefix denoting a factor of ten (10), used in units of measurement to indicate ten times the base unit.

10 Units

A quantifiable amount often used in medical dosing or measurement, where the unit of measure should be specified for clarity (e.g., insulin units, milliliters).

Ounce

A unit of weight in the avoirdupois system, equivalent to 28.3495 grams, commonly used in the United States and the United Kingdom.

16 Oz

A unit of weight or volume in the Imperial and U.S. customary systems, equivalent to one pound or about 0.473 liters.