Waves from a Radio Station with a Wavelength of 600

question 30

Multiple Choice

Waves from a radio station with a wavelength of 600 m arrive at a home receiver a distance 50 km away from the transmitter by two paths.One is a direct-line path and the second by reflection from a mountain directly behind the receiver.What is the minimum distance between the mountain and receiver such that destructive interference occurs at the location of the listener? Assume no phase change on reflection.

• A)150 m
• B)300 m
• C)450 m
• D)600 m

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Definitions:

Landsteiner

Karl Landsteiner was an Austrian biologist and physician, best known for discovering the ABO blood group system in 1901.

Heterozygous Dihybrid

An individual possessing two different alleles for two traits, resulting from the cross of parents differing in two specific traits.

Genotype

The genetic constitution of an organism, determining specific characteristics by encoding instructions for proteins.

AaMm

Represents a genotype consisting of two different alleles, Aa, for one trait and two different alleles, Mm, for another trait, indicating a hybrid individual.