हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Water waves produced by a motor boat sailing in water are ______. - Physics

Advertisements
Advertisements

प्रश्न

Water waves produced by a motor boat sailing in water are ______.

विकल्प

  • neither longitudinal nor transverse.

  • both longitudinal and transverse.

  • only longitudinal.

  • only transverse.

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

Water waves produced by a motor boat sailing in water are both longitudinal and transverse.

Explanation:

Motorboat produces water waves on the surface as well as inside the water. Hence, waves are both transverse and longitudinal.

shaalaa.com
Reflection of Waves - Standing Waves and Normal Modes
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 15: Waves - Exercises [पृष्ठ १०५]

APPEARS IN

एनसीईआरटी एक्झांप्लर Physics [English] Class 11
अध्याय 15 Waves
Exercises | Q 15.1 | पृष्ठ १०५

संबंधित प्रश्न

A bat is flitting about in a cave, navigating via ultrasonic beeps. Assume that the sound emission frequency of the bat is 40 kHz. During one fast swoop directly toward a flat wall surface, the bat is moving at 0.03 times the speed of sound in air. What frequency does the bat hear reflected off the wall?


An open organ pipe of length L vibrates in its fundamental mode. The pressure variation is maximum


Two wires of same material are vibrating under the same tension. If the first overtone of first wire is equal to the second overtone of second wire and radius of first wire is twice the radius of the second then the ratio of length of first wire to second wire is


The displacement of a string is given by y (x, t) = 0.06 sin (2πx/3) cos (120 πt) where x and y are in m and t in s. The length of the string is 1.5 m and its mass is 3.0 × 10−2 kg.

  1. It represents a progressive wave of frequency 60 Hz.
  2. It represents a stationary wave of frequency 60 Hz.
  3. It is the result of superposition of two waves of wavelength 3 m, frequency 60 Hz each travelling with a speed of 180 m/s in opposite direction.
  4. Amplitude of this wave is constant.

Which of the following statements are true for a stationary wave?

  1. Every particle has a fixed amplitude which is different from the amplitude of its nearest particle.
  2. All the particles cross their mean position at the same time.
  3. All the particles are oscillating with same amplitude.
  4. There is no net transfer of energy across any plane.
  5. There are some particles which are always at rest.

A sonometer wire is vibrating in resonance with a tuning fork. Keeping the tension applied same, the length of the wire is doubled. Under what conditions would the tuning fork still be is resonance with the wire?


The wave pattern on a stretched string is shown in figure. Interpret what kind of wave this is and find its wavelength.


The pattern of standing waves formed on a stretched string at two instants of time are shown in figure. The velocity of two waves superimposing to form stationary waves is 360 ms–1 and their frequencies are 256 Hz.

  1. Calculate the time at which the second curve is plotted.
  2. Mark nodes and antinodes on the curve.
  3. Calculate the distance between A′ and C′.

A tuning fork vibrating with a frequency of 512 Hz is kept close to the open end of a tube filled with water (Figure). The water level in the tube is gradually lowered. When the water level is 17 cm below the open end, maximum intensity of sound is heard. If the room temperature is 20°C, calculate

  1. speed of sound in air at room temperature
  2. speed of sound in air at 0°C
  3. if the water in the tube is replaced with mercury, will there be any difference in your observations?

Show that when a string fixed at its two ends vibrates in 1 loop, 2 loops, 3 loops and 4 loops, the frequencies are in the ratio 1:2:3:4.


Two identical strings X and Z made of same material have tension Tx and Tz in them If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio `"T"_x/"T"_"z"` is ______.


Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the ceiling. The rod is of mass 'm' and has another weight of mass 2m hung at a distance of 75 cm from A. The tension in the string at A is :


Two travelling waves produce a standing wave represented by the equation. y = 1.0 mm cos (1.57 cm-1) x sin (78.5 s-1)t. The node closest to the origin in the region x > 0 will be at x = ______ cm.


Two closed end pipes when sounded together produce 5 beat per second. If their length are in the ratio 100 : 101, then fundamental notes produced by them are ______.


A tuning fork is vibrating at 250 Hz. The length of the shortest closed organ pipe that will resonate with the tuning fork will be ______ cm.

(Take the speed of sound in air as 340 ms-1.)


A tuning fork of frequency 480 Hz is used in an experiment for measuring the speed of sound (ν) in the air by resonance tube method. Resonance is observed to occur at two successive lengths of the air column, l1 = 30 cm and l2 = 70 cm. Then, ν is equal to ______.


A string 2.0 m long and fixed at its ends is driven by a 240 Hz vibrator. The string vibrates in its third harmonic mode. The speed of the wave and its fundamental frequency is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×