mediumFPSCNTSCSSPPSCPhysics
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View all1The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?2The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?3A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?4The approximate intensity level of the sound which can cause damage to the ear drum is?5The waves which are used for line of sight (LOS) communication are called:6The Largest Producer of Electricity in the Islamic World is______________________?
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Correct Answer: B: Small electric sparks
Explanation: The correct answer is B: Small electric sparks. The cracking sound when dry hair is combed with a rubber comb is due to small electric sparks. The rubbing creates static electricity, and the sparks occur as the charge is discharged.
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- The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?
- The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?
- A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?
- The approximate intensity level of the sound which can cause damage to the ear drum is?
- The waves which are used for line of sight (LOS) communication are called:
- The Largest Producer of Electricity in the Islamic World is______________________?