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Draw the image formation on the diagram

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Reference no: EM132818109

Question 1. A sphere is constructed of two concentric parts. The inner part is a solid sphere of radius 10.0 cm made of a material with density 4000 kg/m3. The outer part is a spherical shell with inner radius 10.0 cm and outer radius 20.0 cm. The material in the outer shell has a density 9000 kg/m3.

(a) What is the mass of the sphere?

(b) What is the average density of this sphere?

Question 2. A 2.0-m string is fixed at both ends and tightened until the wave speed is 78m/s.

a) What is the number of harmonic (i.e., n = ?) n = ____________

b) What is the frequency of the standing wave shown in the figure?

1291_figure.jpg

Question 3. The figure shows the path of a ray of light as it travels through air and crosses a boundary into water. The index of refraction of water for this light is 1.33.

2401_figure1.jpg

a) What is the speed of this ray of light as it travels through the water?

b) What is the angle of refraction for this situation?

Question 4. In the figure, the orientation of the transmission axis for each of three polarizing sheets is labeled relative to the vertical direction. A beam of unpolarized light is incident on the first polarizer with an intensity of 1000 W/m2. What is the intensity of the beam after it has passed through the three polarizing sheets when θ1 = 30°, θ2 = 45° and θ3 =60°?

1895_figure2.jpg

Question 5. A violin string made of steel has length of 40 cm and mass of 35 gm. When used on a violin, a tension of 40 N is applied and a section of the string 35 cm long is caused to vibrate with a bow. The sound generated has an intensity level of 60 dB at a distance of one meter.
a) What is the speed of transverse waves on this string?

b) Assuming the speed of a transverse wave is 90 m/s, what is the frequency (Hz) of the second harmonic standing wave on this string?

c) What is the sound intensity level (dB) at a distance of 30 m?

Question 7. The figure is a scaled diagram of an object and a converging lens.

1528_figure3.jpg

The focal length of the lens is 5.0 units. An object is placed 3.0 units from the lens as shown.

Draw the image formation on the diagram. (Same as that in Question 9 in Part I)

Verified Expert

1-in this question we have used the concept of relation between mass density and volume 2. Wave Frequency in a string depend on the number of harmonics length of the string and the speed of wave. 3. higher the refractive index lesser the speed of light in that medium using this concept we can solve this question. using snell's law we can find the angle . 4. Intensity is inversely proportional to angle as we increase the angles intensity is going to decrease with the cos.. of that angle 5.it is basically related to intensity of wave . 6. It is related to converging lens so I have shown it in solutions .

Reference no: EM132818109

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3/6/2021 1:02:53 AM

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