In an Experiment Different Wavelengths of Light, All Able to Eject

question 23

Multiple Choice

In an experiment different wavelengths of light, all able to eject photoelectrons, shine on a freshly prepared (oxide-free) zinc surface. Which statement is true?

• A) The number of photoelectrons emitted per second is independent of the intensity of the light for all the different wavelengths.
• B) The number of photoelectrons emitted per second is directly proportional to the frequency for all the different wavelengths.
• C) The maximum kinetic energy of the photoelectrons emitted is directly proportional to the frequency for each wavelength present.
• D) The maximum kinetic energy of the photoelectrons has a linear relationship with the frequency for each wavelength present.
• E) The maximum kinetic energy of the photoelectrons is proportional to the intensity of the light and independent of the frequency.

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Definitions:

Conservation

The principle in environmental science aiming at the prevention of waste and protection of the natural environment; in psychology, it refers to a child's ability to understand that a quantity does not change even when its form does.

Object Permanence

The comprehension in infants that items remain in existence even when they are not visible, audible, or tangible.

Conservation

In cognitive development, the understanding that certain properties of an object or substance remain the same even when its appearance is altered, typically developed during the concrete operational stage.

Conservation

In cognitive psychology, the concept that children learn that quantity, length, or number remain the same despite changes in appearance or form.