How much more intense is sound at 40dB than sound at 30dB?

Q: The two speakers of a boom box are 40 cm apart. A single oscillator makes the speakers vibrate in…

A: The expression for the wavelength,

Q: Plastic bags have a thickness of about 0.001 mm. How many wavelengths of red light is that

A: It is known that Wavelength of red light is 700 nm. Thickness of plastic bag is, 0.001 mm=1×10-6 m…

Q: If 100 waves pass through a mediumin 20seconds and their wavelength is 6cm then velocity is

A: Given that, No. of waves, n = 100  Time, t = 20 s The wavelength of wave = 6 cm We need to find the…

Q: What kinds of waves can show interference?

A: Interference is the superposition of waves to form a resultant wave. Waves can interfere either…

Q: _______________ refers to the superposing of two or more coherent waves to produce regions of maxima…

A: The interference pattern is formed when the two waves interact and due to the superposition…

Q: How much more intense is sound at 40dB than sound at 0dB?

A: The relation between intensity of sound and threshold is given as, Where, Io = intensity at 0 dB I…

Q: Give 1 application of Interference and Diffraction of Light

A: Diffraction & Interference of Light  Defination:- When a light wave  travelling in straight path…

Q: The colour of a thin film is due to:   A) Scattering B) Dispersion C) Diffraction D) Interference

A: The color of thin film is because of interference. When we incident light rays on the thin oil film…

Q: An aircraft maintenance technician walks past a tall hangardoor that acts like a single slit for…

A:

Q: A sound wave travelling in a dense medium has a frequency of 20 KHz and a wavelength of 40 cm. What…

A: Write the expression for the speed of the waveform. Here, n represents the frequency and λ…

Q: The path difference between two waves is 6m. If the wavelength of the waves emitted by the two…

A: We have the relation: phase difference=2πλ×path difference

Q: You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see…

A: Given, The total time of sound travelling is 20.0 sec

Q: How fast should you move away from a 6.0 x 1014 Hz light source to observe waves with a frequency of…

A: From the doppler effect, the expression for the wavelength is: Substitute the known values and…

Q: Calculate the corresponding values of m for the first and second orders of interference us…

A: The two-equation is given as  m = dλtanθ1+tanθ=dλxL2+x2 ------ [19.3] and  m≅dxLλ------- [19.4] here…

Q: The SOUND waver ferels width sfeenof 41om/s. If is 18 4 cm Find the frequenry ofcome

A: Given data :   Wave length   =   λ    Speed of sound   =   V        To find :         Frequency

Q: A bat's sqeak takes 0.146 s to retun after reflecting off a moth.  How far away is the bat from the…

A: The time to reach the moth is,

Q: The path length difference between two interfering waves in a double-slitexperiment is 3/2. The…

A:

Q: How much more intense than the threshold of hearing is a sound of 10dB? 30dB? 60dB?

A: The expression for the intensity is given by,

Q: What is the formula for destructive interference?

A:

Q: Spectral analysis of the 6 second record in the EEG above shows two sine waves of equal (20…

A: Given diagram: \

Q: A diver below the surface of a lake hears the sound of the siren of a boat on the surface just above…

A:

Q: What is frequency of a wave having a wave length of 613 nm?

A: Write the expression for the frequency. Here, c represents the speed of light and λ represents the…

Q: Two out of phase loudspeakers are X distance apart. A person is 6 meters from one and 4 from…

A: Given that , two out of phase loudspeakers are X distance apart. A person is 6 meters from one and 4…

Q: True or False: Sound waves are generally faster than light waves. O True O False

A: The speed of light in a vacuum is 3×108 m/s. The sound requires a medium to travel. The speed of…

Q: The sound waves travel with speed of 456 m/s. If is wavelength is 8 cm, Find the frequency of wave?

A: Given, Speed of sound wave (v) = 456m/s  Wavelength of wave (λ)= 8cm

Q: Certain blue lights have a frequencey of 6.9 x 10 Hz. What is the wavelength? O 7.85 m O 43.5 m O…

A: Given that, The frequency of blue light, f=6.9×106 Hz We need to find its wavelength. We know that,…

Q: Blue light has a frequency of about 7.5 x 10^14 Hz.  What is the corresponding wavelength?

A: The expression for the wavelength is,

Q: You shine a monochromatic red light of frequency 4.30 x 10^14 Hz into a flint glass. What are the…

A: We know, Wave length of light of frequency f in air is given by , λair = c/f c = 3 × 108 m/s Also…

Q: If 100 waves pass through a mediumin 20 seconds and their wavelength is 6cm then velocity is

A: Given, 100 waves pass through a medium in 20 seconds wavelength = 6cm = 0.06 m We know that velocity…

Q: nterference patterns are produced when two sources of waves are placed side by side. A. True B.…

A: Interference of waves are observed only when the sources are coherent. By coherent sources, we mean…

Q: Water waves with an amplitude of 0.80cm and a wavelength of 2.5cm go through two openings in a…

A: Given, A = 0.80cm λ = 2.5 cm a = 1.2 cm d = 12.0 cm The expression for the constructive interference…

Q: Which of these is NOT characierictic progressive longitudinal waves? A They can be diffracted B They…

A: Longitudinal progressive waves Waves move energy from one place to another. In a progressive wave,…

Q: A 3.04-kHz tone is being produced by a speaker with a diameter of 0.212 m. The air temperature…

A:

Q: Rank these scenarios on the basis of the angle of the first interference maximum. Rank from largest…

A:

Q: An unfingered guilar 3ring is o.13 m aud is tuned to play E above middle ck (330H3), How far from…

A:

Q: As Section 17.3 discusses, high-frequency sound waves exhibit less diffraction than low-frequency…

A: Given, Highest frequency, f=2x104 Hz Speed of sound, v=343 m/s Width of doorway, W=1.1m

Q: Approximately how long does it take a light wave to travel from your head to your toes? Assume you…

A: The light travels with the speed of 3×108 m/s which is very high speed and light always follow the…

Q: The distance between the center of a condensation and the center of an adjacent rarefaction is 47.90…

A:

Q: What is the size of the smallest feature observable in human tissue when examined with a 19 mhz…

A:

Q: Consider an array of parallel wires with uniform spacing of 1.30 cm between centers. In air at…

A: (a)

Q: Two interfering source have an intensity ratio of 16:1. Deduce their amplitude ratio and the ratio…

A:

Q: Diffraction occurs when a sound wave changes direction due to a change of medium, or an obstade of a…

A: Diffraction of waves is defined as a phenomenon in which waves spread out as they pass through an…

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.