Question

Question 2 A typical FM radio wave has a wavelength of 3.0 m. What is the frequency of the wave? O a. 100.0 MHZ b. 1000.0 Hz O c. 10.0 KHz O d. 100.0 KHz

Answer 1

So, a [Mo iaz permeability of free space Question 2 we know, velocity frequency In wavelength frequency of FM radio wave Velocity of light wavelenth 3x108 mis 108 Hz 100.0x100 Hz C1m = 106] Question 5 netic wave Intensity of electromag Electric field strength field strength .2 Mo 3. Om - = 1000 MHz 2 4T1 x 107 N/A2 100.0 x 2.0x10-6 2 W/m2 2 x 4 T1 x 10 79.6 W/m2

with the So, and reflected rays Question 7 of the angle of incident plane when a ray reflected from a surface then the angle of incident and and angle acon with the normal to the plane surface is equal to angle of reflected scay normal to the plane surface are equal The angle between the incident 2x inside angle of incident ray with the normal to the plane surface = 2*35.0 degree = 70.0 degree Question & Let on be the angle of reflection, According to shell's law, sin di = "glass sinon Mair se free time inder of ait e1-0 glan = refractive in den of glass angle, of incidence n air Where crown z 1.52 0.1 = 55 •odeprec SO 1.0 x sin s5.0° 0 1:52xsin on 1.0xsin 550 0.54 or, sin Or 21. On 2 oo stri' (0.54) = 32.961 degree Z 1.52

mirror Question 12 The equation a for var t Where u is a object distance to me image distance a f is focal length. object v is In our case 10.0cm fa 20.0 cm Fore From ① I 10.0 + 1 - 2000 - 아 2 lowo 3 V -2000 10.0 20 or, 19 ? 20 3 -6.67 cm So, the image is located at 6.67cm.