A Diffraction Pattern Is Produced on a Viewing Screen by Illuminating

question 68

Multiple Choice

A diffraction pattern is produced on a viewing screen by illuminating a long narrow slit with light of wavelength $\lambda$ .If $\lambda$ is increased and no other changes are made:

• A)the intensity at the center of the pattern decreases and the pattern expands away from the bright center
• B)the intensity at the center of the pattern increases and the pattern contracts toward the bright center
• C)the intensity at the center of the pattern does not change and the pattern expands away from the bright center
• D)the intensity at the center of the pattern does not change and the pattern contracts toward the bright center
• E)neither the intensity at the center of the pattern nor the pattern itself change

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Definitions:

Equilibrium Price

The cost in the market at which the supply and demand for goods are balanced.

Invisible Hand Principle

An economic theory proposed by Adam Smith, suggesting that individuals' pursuit of self-interest in free markets leads to economic prosperity and efficiency as if guided by an invisible hand.

Market Prices

The current value at which goods and services are bought and sold in the market, determined by supply and demand forces.

Economic Well-being

A broad measure of prosperity among individuals or nations, incorporating income, employment, and access to resources and services conducive to a high quality of life.