Physics 7C - Fall 1999 - Packard - Midterm 1

Physics 7C - Fall 1999 - Packard - Midterm 1 - Name: SID...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Name: SID Midterm I Physics 7C Fall 1999 R. Packard Work all problems. Do not perform any numerical calculation until you have a final boxed algebraic answer. In order to obtain maximum partial credit show all your work clearly. Work the easiest problem first and then move on to harder ones. If you don’t understand what is being asked in a “ problem, ask the proctor for clarification. Good luck. ?(€(~5€ pug {a /e dlfic. 5 ecficu Uuwed 1. A circular loop of wire can be used to detect electromagnetic waves. Suppose a 100MHz radio station radiates SOkW uniformly in all directions. At the circular loop the electric field vector is oriented in the vertical direction. A) For maximum induced voltage in the loop what should be the orientation of the normal to the plane of the loop?B) What is the rms voltage that could be induced in a loop of radius 300m at a distance of 105m from the station if the loop is oriented as described in part A? 2. A laser beam is incident on a plate of glass of thickness 3cm and index of refraction n=1.5. the angle of incidence is 40°. The top and bottom surfaces of the glass are parallel and both produce reflected beams of nearly the same intensity. What is the perpendicular distance d, between the two adjacent reflected beams. 3. An object is 17.50m to the left of a lens of focal length f1=8.50m. A second lens of focal length f2= -30cm is 5 cm to the right of the first lens. A) Find the distance between the object and the final image. B) What is the overall magnification? C) Is the final image real or virtual? Upright or inverted? Before you solve the problem algebraically, make a ray diagram that indicates the final image . 4. Television viewers sometimes notice that the picture flickers (fades in and out) when an airplane flies across the sky in the vicinity. The flickering arises fiom the interference between the signal directly from the transmitter and that reflected from the airplane. Suppose the TV set is 36km from the transmitter which broadcasts at 86MHz. The airplane is flying directly overhead toward the transmitter at a height of 600m above the receiver, and the rate of oscillation of the picture’s intensity is 4H2. Find the speed of the plane. ...
View Full Document

Page1 / 4

Physics 7C - Fall 1999 - Packard - Midterm 1 - Name: SID...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online