The Primary Source of the Energy Radiated by a Star,such

question 11

Multiple Choice

The primary source of the energy radiated by a star,such as the sun,is

• A) beta decay.
• B) alpha decay.
• C) fission reactions involving uranium.
• D) fusion reactions in which hydrogen is fused to form helium.
• E) fusion reactions in which helium is fused to form iron.

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Definitions:

Emmetropic

Pertaining to the normal refractive condition of the eye where light is focused directly on the retina, resulting in clear vision at all distances.

Hyperopic

A term describing a condition of the eye where distant objects can be seen clearly, while close objects appear blurred, also known as farsightedness.

Presbyopia

A condition in which the eye gradually loses the ability to focus on close objects, typically associated with aging.

Emmetropic

Emmetropic refers to the normal condition of the eye wherein light focuses directly on the retina, resulting in perfect vision without the need for corrective lenses.