The Figure Shows Two Point Sources of Light, a and B

question 19

Multiple Choice

The figure shows two point sources of light, A and B, that emit light waves in phase with each other. A is distant 3λ from point P. B is distant 5λ from P. (λ is the wavelength.) The phase difference between the waves arriving at P from A and B is

• A) 0 rad.
• B) π rad.
• C) 2π rad.
• D) 3π rad.
• E) 4π rad.

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Definitions:

Economic Modernization

The process by which an economy transforms from primarily agricultural to one based on the manufacturing of goods and services, often involving technological innovation and changes in socio-economic structures.

Constant Growth

A state or condition of a system, such as an economy or a population, where there is a steady increase over time without periods of decline.

Social Atomization

The breakdown of social bonds between an individual and their community or society, leading to isolation or a feeling of disconnection.

Kitty Genovese

A New York woman whose 1964 murder became famous due to reports of bystander apathy, sparking research on what is now known as the bystander effect.