Question

Which of the following is/ are not applications of Ultrasonic Waves?; (a) For measuring the depth of Sea.; (b) In sterilizing of a liquid.; (c) In Ultrasonography; (d) In sterilizing a needle.; Options are:
A) Both (a) and (b) Only (b)
B) Only (d)
C) Both (c) and (d)
D) Only (b)

Answer 1

Answer:

D) Only (b) is the correct option

Explanation:

• The term ultrasonic wave refers to "inaudible sound with a higher wavelength or frequency for humans" with a frequency of greater than 20 kHz.
• Ultrasonic wave is a term used nowadays to describe a sound wave that is not meant to be heard.
• Ultrasonic wave is used in sterilizing a liquid.

• Ultrasonic reflection is used to evaluate the depth of the sea.

Answer 2

Option b is the correct answer to this question.

• Some devices may emit only a small amount of visible light while emitting intense UV radiation.
• Although this type of radiation does not penetrate the skin as deeply as UVA rays.
• It is responsible for the majority of sunburns and is the main cause of skin cancer.
• Photosensitization to UV can occur from certain dermal chemicals and oral drugs.