ts total Multi t answer on the line next to the statement. (16 pts) A. Multiple
ID: 1635637 • Letter: T
Question
ts total Multi t answer on the line next to the statement. (16 pts) A. Multiple Choice. Place the bes B) decreasing the area of the coil D) all of these 1. Which of the following will change the magnetic flux in a coil? A) increasing the magnetic field C) spinning the coil 2. Which of the following scientists discovered electromagnetic induction. D) Neither of them B) Henry C) Both of them A) Faraday A) transverse wave because the electric field is parallel to the wave motion. B) transverse wave because the magnetic field is parallel to the wave motion. 3. An electromagnetic wave is a C) transverse wave because both the magnetic and electric fields are perpendicular to the wave motion. D) none of these. 4. Light is polarized in the vertical direction and is incident upon an ideal polarizer with its transmission axis oriented horizontally. Which of the following is true the B) the same as the incident intensity. intensity of the light after passing through the polarizer? A) one-half the incident intensity. C) one-fourth the incident intensity. D) zero.. A) Real, upright, reduced image 6. The energy density of the electromagnetic wave is Which of the following is an image formed by a convex mirror? B) Real, inverted, enlarged image. D) Virtual, upright, reduced image C) Virtual, inverted, enlarged image A) greater in the electric field C) equal in both the electric and magnetic fields. D) there is no energy B) greater in the magnetic field. 7. Which of the following will induce the largest emf in a coil of wire? A) increasing the magnetic field and increasing the area of the coil B) increasing the magnetic field and decreasing the area of the coil C) decreasing the magnetic field and increasing the area of the coil D) decreasing the magnetic field and increasing the number of turns in the coil. 8. A ray of light is incident upon a concave mirror at 35o from the normal. The reflected angle is A) 35° from the normal because the two angles are always equal for reflection. B) greater than 35° from the normal because the surface is curved inward. C) less than 350 from the normal because the surface is curved inward. D) Cannot be determined from the given information.Explanation / Answer
Solution: A Multiple Choice
1)Option D is Right , Because magnetic flux depends upon Magnetic field , Angle(Spinning of coil will change it) , Area of the Coil.
2)Option A , Michael Faraday Discoverd EelctroMagnetic Induction.
3)Option C , in ElectroMagnetic wave electric field and Magnetic field is perpendicular to the wave motion.
4)Option D, As the direction of polarized Light is Vertical and axis of polarizer is aligned in horizontal direction. so no light will pass through it.
5)Option D, Convex Mirror produces Virtual, Upright and reduced in size image.
6)Option C, In an electromagnetic wave, the average energy density of electric field is equal to average energy density of magnetic field.
7)Option A, Increasing the Magnetic field and increasing the area will induce more current in the coil as the flux will increase in that case.
8)Option A, Law of reflection holds in mirror.
B True False:
9) True, if the magnetic field is perpendicular to the normal of the coil then angle between them is 90 and cos90 = 0 so there will be no flux and no induce current.
10)False, ElectroMagnetic Wave are transverse Wave
12)False, Concave mirror do form Virtual Image in some cases
13)False, in a step up transformer potential increases because number of turns in secondary coil is large as compared to primary coil.
C Mathcing
14) Focal length ( distance from ceter to focal point)
15)induced current , To change the voltage it uses the concept of induced current
16)Real image (not sure)
17) Speed of light
18)lenz's law is used to find the direction of induced current
19)Diffuse reflection
20) Perpendicular (electric field and magnetic field both are perpendicular in em wave)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.