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Which one of the following statements is/are incorrect regarding waves? (A) wave height is not indicator of wave energy (B) wave height is controlled by wind strength (C) the distance of open water a wave travels over affects the wave height (D) the depth of the sea is important factors affecting wave height Choose the most appropriate answer from the options given below:
Consider the following statements regarding sound wave.  I. It is a kind of longitudinal wave.  II. It is a mechanical wave.  III. The audible sound wave has the frequency of 20 Hz-20000 Hz.  Which among the above statements is/are correct?
Many wave properties are dependent upon other wave properties. Yet, one wave property is independent of all other wave properties. Which one of the following properties of a wave is independent of all the others?
Below are given four statements followed by four conclusions. You have to take the given statements to be true even if they appear to be at variance with commonly known facts, and then decide which of conclusions logically follows from the given statements. For each question, mark out an appropriate answer choice that you think is correct. Statements: Some kind are intelligent. Some cruel are kind. All cruel are people. No people is an animal. Conclusions: I. No cruel is an animal. II. Some kind are not an animal. III. Some kind are not intelligent. IV. All animals are intelligent.
Which of the following inverter output waveforms are better compared to a square wave? 1. Quasi sine wave 2. Pulse Width Modulation 3. Sine wave 4. Triangular wave
When the crest of one wave falls on the crest of the second wave, and trough of one wave falls on the trough of the second wave, this phenomenon is called
A wave represented by the equation y=acos(kx-ωt) is superposed with another wave to form a stationary wave such that point x=0 is a node. The equation for the other wave is?
In a submarine fitted with SONAR, the time interval between the generation of an ultrasonic wave and the receipt of its echo is 200s. What is the distance of the enemy submarine? The speed of the sound in water is 1.450km/s.
Which of the following is/are the applications of Sound waves? 1. It is used in the cleaning of instruments, detecting cracks in buildings, machines, ultrasound machines, and echocardiograph, SONAR. 2. In the military it is used to detect enemy aircraft. 3. In astronomy, it’s used to find the speed of moving stars and in sonography. 4. X-rays Select the correct answer using the codes given below.
Continuous Wave (CW), Pulsed Wave (PW) and Color Flow (CF) are terms used for which kind of ultrasound?