Welcome to your Light Waves(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. A major property of light wave is that it is Propagated in a curved line Electromagnetic in nature Electrostatic in nature In the form of longitudinal waves 2. Points B, E, G, and J on the wave are _______________. crest troughs pitch nodes 3. Points D and I on the wave are __________________. troughs pitch nodes crest 4. Radio waves belong to the class of wave whose velocity is about 340m/s 3 e8 m/s 3 e6 m/s 3 e-8 m/s 5. Which of these colours appears in a pure spectrum of visible light? Yellow Brown Black White 6. An annular eclipse of the sun is seen by an observer at a point beyond the vertex of the umbra cone of the moon in the umbra produced by the moon in the penumbra produced by the moon in the umbra produced by the earth 7. An image in which no light rays pass through it is called a Real Image Virtual Image Reflection Refraction 8. In a normal eye, light rays converge on the: Retina Iris Pupil Lens 9. this image shows an example of: Penumbra A broken straw Reflection Refraction 10. After randomly polarized light passes through a polarizer, it is totally polarized. totally blocked. partially polarized randomly polarized. 11. The main difference between a radio wave and a light wave is its both none of the above wavelength. speed. 12. An image in which no light rays pass through it is called a Real Image Reflection Refraction Virtual Image 13. This types of mirror has a surface that curves inward: Longitudinal Mirror Opaque Mirror Concave Mirror Convex Mirror 14. Points A and F onthe wave are ________ nodes troughs crest pitch 15. Concave lenses are thinner in the middle and thicker at the edges so they cause light rays to _______ Transverge Converge None of the above Diverge 16. Radio carrier waves are generated by causing electrons to oscillate rapidly in a television camera an antenna microphone a transmitter 17. Lenses are used in spectacles to treat some vision defects. The two main lens types are converging lenses and diverging lenses. Diverging lenses always produce virtual, diminished images. Which row of the table describes the images produced by a converging lens? Type of image Size of image A Only real Only magnified B Either real or virtual Either magnified or diminished C Either real or virtual Only magnified D Only virtual Only diminished B C D A 18. Which of the following are properties of a plane mirror image?A. The image is the same size as the object.B. The image is upright.C. The image is laterally inverted. A and B B and C A only A, B and C 19. The wavelength of signals from a radio transmitter is 1500 m and the frequency is 200kHz. What is the wavelength for a transmitter operating at 1000kHz? 300 m 7.5 m 7500 m 15 m 20. Total eclipse of the sun occurs when earth is between the moon and the sun moon is between the sun and the earth ozone layer is threatened sun is between the moon and the earth 21. What property of waves is shown in the animation? light refraction longitudinal transverse 22. In this example of constructive interference, what increases? Speed Frequency Wavelength Amplitude 23. How long does it take light to travel 1.0 m? 3.3 ns 3.3 s 3.3 ms 3.3 micro-s 24. The distance between A and F is the _____________. Period Wavelength Frequency Amplitude 25. What frequency are 20 mm microwaves? 100 MHz 73 GHz 15 GHz 400 MHz 1 out of 25 Time is Up! Time's up