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1.
In SONAR, we use
2.
An oscilloscope is an instrument which allows us to see waves produced by
3.
The sound travels fastest in
4.
Two identical piano wires have same fundamental frequency when kept under the same tension.
What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?
What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?
5.
The turntable of a gramophone is rotated at a constant speed of x revolutions/minute. Which one of the following values of the revolutions per minute is not used?
6.
Why is sound heard with more intensity through CO2 than through the air?
7.
Which one of the following properties distinguishes ultrasound from normal audible sound?
8.
Consider the following statements:
If the same note is played on a flute and a sitar, one can still distinguish between them because they differ in
1. frequency
2. intensity
3. quality
Which of the statements given above is/are correct?
If the same note is played on a flute and a sitar, one can still distinguish between them because they differ in
1. frequency
2. intensity
3. quality
Which of the statements given above is/are correct?
9.
Consider the following statements:
Sound waves can undergo
1. reflection
2. refraction
3.interference
Sound waves can undergo
1. reflection
2. refraction
3.interference
10.
Consider the following parts of spectra
1. Visible
2. Infrared
3. Ultraviolet
4. Microwave
Which one of the following is the correct sequence in which their wavelengths increase?
1. Visible
2. Infrared
3. Ultraviolet
4. Microwave
Which one of the following is the correct sequence in which their wavelengths increase?