Which of These Statements Are True? (I)When Two Waves with the Same

question 23

Multiple Choice

Which of these statements are true? (i) When two waves with the same frequency and amplitude overlap,the result is a wave with the same frequency and twice the amplitude.
(ii.If the two waves with the same frequency and amplitude are 180 ^$\circ$ out of phase,the amplitude of the resulting wave is zero.
(iii) If two waves have the same frequency and amplitude but one is positive and the other is negative,the resulting wave is a standing wave with the same frequency and amplitude.
(iv.Interference maximum occurs when waves cancel each other out.

• A)(i)and (iv)are true.
• B)(ii)and (iii)are true.
• C)(i)and (ii)are true.
• D)All are true.
• E)None are true.

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Definitions:

Total Variable Cost

Total Variable Cost is the sum of all costs that vary with the level of production, such as materials and labor directly involved in the production.

Average Fixed Costs

The total fixed costs of production divided by the quantity of output produced, which decreases as production increases.

Total Fixed Costs

Expenses that do not change in proportion to the activity of a business, such as rent, salaries, or insurance premiums.

Silk Flower Arrangements

Artificial flower displays made from silk and other materials, designed to replicate the appearance of natural flowers.