Optics Answers

Suppose all 6 equal-length strings of an acoustic guitar are played without fingering, that is, without being pressed down on any frets. What quantities are the same for all six strings? choose all correct answers

(a) the fundamental frequency 

(b) the fundamental wavelength 

(c) the fundamental wavelength of the sound emitted 

(d) the speed of the string wave

Suppose all 6 equal-length strings of an acoustic guitar are played without fingering, that is, without being pressed down on any frets. What quantities are the same for all six strings? choose all correct answers

(a) the fundamental frequency 

(b) the fundamental wavelength 

(c) the fundamental wavelength of the sound emitted 

(d) the speed of the string wave

A flute has a length of 58.0cm. If the speed of sound in air is 343m/s, what is the fundamental frequency of the flute, assuming it is a tube closed at one end and open at the other?

The difference between the indices of carbon bi sulphide for blue light and red light is 0.48 while the critical angle for the red light at carbon bi sulphide air interface is 49°. Calculate the critical Ray of the carbon bi sulphide for the blue light. Thank you

A compound microscope has lenses of focal length 1cm and 3cm. An object is placed 1.2 cm from the object lens; if a virtual image is formed 25cm from the eye, calculate the separation of the lenses and the magnification of the instrument.

Give a detailed description of the optical system of the compound microscope.

The distance between an object and its upright image is 20.0cm. If the magnification is 0.50, what is the focal length of the lens being used to form the image?

The refracting telescope at Yerkes Observatory has a 1.00m diameter objective lens of focal length 20.0m. Assume it is used with an eyepiece of focal length 2.50cm.

(a) Determine the magnification of Mars as seen through this telescope.

The distance between the eyepiece and the objective lens in a certain compound microscope is 23.0cm. The focal length of the eyepiece is 2.50cm and that of the objective is 0.400cm. What is the overall magnification of the microscope?

Draw the path of two rays, from a point on an object, passing through the optical system of a compound microscope to the final image as seen by the eye.