Question

Add a suitable prefix to the following words, from the options given below, to match the meaning given against them: ________sonic: (sound) having a pitch above the upper limit of human hearing ________standard: not having the required or normal quality *
1 point
(a) super, sub
(b) hyper, sub
(c) ultra, supra
(d) Infra, super​

Answer 1

Supersonic and substandard are the correct prefixes.

The correct option is (a).

Explanation:

• A supersonic sound is one that moves faster than the sound speed.
• Supersonic sound can travel faster than the air currents.
• Humans can not hear a supersonic sound as it has a very high pitch and it is above the upper limit of human hearing substandard.
• The quality of this sound is above the human hearing system.

Answer 2

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super sonic: (sound) having a pitch above the upper limit of human hearing sub standard: not having the required or normal quality.