The Discovery of the Gravitational Lens Effect for Quasars

question 92

Multiple Choice

The discovery of the gravitational lens effect for quasars

• A) shows that quasars were located within the local group of galaxies.
• B) shows that quasars were giant planets in our solar system.
• C) shows that quasars are much further away than the distant galaxy that forms the gravitational lens.
• D) proves Newton s theory of gravitation by showing that the photon was affected by gravity.
• E) proves the existence of super massive black holes at the center of active galactic nuclei.

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Definitions:

Exponential Distribution

A probability distribution that describes the time between events in a process where occurrences happen at a constant rate.

Proportion

A portion, segment, or fraction when evaluated in relation to its entirety.

Chi-squared Curve

Describes the distribution of a chi-squared statistic, used in hypothesis testing to determine how well observed data fit with expected data.

Degrees of Freedom

The number of independent values or quantities that can vary in the analysis without violating any constraints.