An Ultraviolet Light Beam Having a Wavelength of 217 Nm

question 17

Multiple Choice

An ultraviolet light beam having a wavelength of 217 nm is incident on a molybdenum surface with work function of 4.9 eV.What is the stopping potential? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.6 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

• A)10.6 V
• B)5.3 V
• C)0.8 V
• D)0.4 V
• E)​5.7 V

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Definitions:

Seminal Vesicles

Glands that secrete a significant portion of the fluid that becomes semen, providing nutrients and a medium for sperm after ejaculation.

Seminiferous Tubules

Narrow, coiled tubules within the testes where sperm are produced.

Spermatogenic Cells

Cells located in the testes that undergo division and differentiation to produce sperm.

Testes

The primary organs of the male reproductive system. Testes produce the hormone testosterone.