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The physical quantity which oscillates in a wave formed by slinky is :

a) mass

b) energy

c) amplitude

d) frequency

Please answer with reasons. Thanks.


Answer is energy as waves transfer energy.
hope it helps.. :)
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This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Mass oscillates in mechanical waves like pressure waves, or sound waves caused due to vibration.  There is no mass oscillating in an electromagnetic wave.
Amplitude is a fixed quantity for a constant wave of a frequency. The amplitude could oscillate (vary periodically) if there are multiple frequencies in a wave.
Frequency can also oscillate periodically if the wave is modulated. For example, in case of FM radio waves, the frequency oscillates in the air waves.

In a simple single frequency wave with a constant amplitude, the quantity that varies as a Sine or cosine is the energy in the wave at a point or the energy that is transmitted along the direction of propagation is an expression with Sine function in it.  The time average of energy is a constant.

So the answer is energy, which is more appropriate than other choices given.

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