Question
The device that uses ultrasonic waves to measure the
distance, direction and speed of underwater objects is called:Solution
The device which uses ultrasonic waves to measure the distance, direction and speed of underwater objects is known as SONAR. SONAR stands for Sound Navigation and Ranging. SONAR is helpful for exploring and mapping the ocean because sound waves travel faster in water than that in air.
More Previous Year Paper Questions
Select the wrongly spelt word.
Select the most appropriate synonym of the given word. Â
TIMID
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Complete the sentences given in List-I with the appropriate words given in List-II :
Choose the word opposite in meaning to the given word.
Liberate
The act of ending the employment of a worker or group of workers
Pragmatist
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Select the most appropriate opposite of the given word CARELESS
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