Light of Wavelength 400 Nm Is Incident on a Certain $\times$

question 46

Multiple Choice

Light of wavelength 400 nm is incident on a certain metal.The stopping potential for the emitted electrons is measured to be 1.2 V.What is the work function of this metal? (Planck's constant h = 6.626 $\times$ 10^-34 J · s = 4.136 $\times$ 10^-15 eV s.)

• A)4.3 eV
• B)3.1 eV
• C)1.9 eV
• D)1.2 eV
• E)0.95 eV

Identify the concept and legal implications of different types of contracts.

Recognize the concept of promissory estoppel and its application.

Appreciate the principles underlying the formation of contracts including offer, acceptance, and consideration.

Describe the various elements involved in establishing a contract's legality, capacity, and obligation.

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Definitions:

Deciduous Trees

Trees that shed their leaves annually, typically in the autumn, to conserve water during the winter or dry season.

Limnetic Zone

The open water away from the shore of a lake or pond extending down as far as sunlight penetrates. Compare with littoral zone and profundal zone.

Aquatic Ecosystem

A community of organisms and their physical environment interacting in a water-based environment.

Dense Coastal Fog

A thick fog that forms in coastal areas, usually due to the cooling of warm, moist air over cooler ocean currents.