Questions
- 2001. How does Huygens’ principle explain refraction?
- 2002. What is Huygens’ principle?
- 2003. What is EM wave diffraction?
- 2004. What is EM wave interference?
- 2005. What is the average energy stored in EM waves?
- 2006. How does amplitude affect energy?
- 2007. What is energy density in EM waves?
- 2008. What is radiation pressure?
- 2009. What is power flow in EM waves?
- 2010. What is intensity of an EM wave?
- 2011. What does the direction of the Poynting vector represent?
- 2012. What is Poynting vector?
- 2013. What is energy transport in an EM wave?
- 2014. What is electromagnetic radiation hazard?
- 2015. How is ionizing radiation harmful?
- 2016. What is radiation shielding?
- 2017. Why are gamma rays dangerous?
- 2018. What are uses of gamma rays?
- 2019. What are gamma rays?
- 2020. What are uses of X-rays in medicine?
- 2021. How are X-rays produced?
- 2022. What are harmful effects of UV radiation?
- 2023. What are UV rays used for?
- 2024. What causes the sky to appear blue?
- 2025. What is the Tyndall effect?
- 2026. What is scattering of light?
- 2027. Why does a prism split white light?
- 2028. What is visible spectrum?
- 2029. How is infrared used in night vision?
- 2030. What are applications of infrared radiation?
- 2031. What is microwave oven working principle?
- 2032. What are common uses of microwaves?
- 2033. What are common uses of radio waves?
- 2034. What is fiber optic communication?
- 2035. Why are microwaves used in satellite communication?
- 2036. What is remote sensing?
- 2037. What is radar?
- 2038. What is antenna gain?
- 2039. What is bandwidth in communication?
- 2040. What is digital modulation?
- 2041. What is FM (Frequency Modulation)?
- 2042. What is AM (Amplitude Modulation)?
- 2043. What is modulation?
- 2044. What is space wave propagation?
- 2045. What is ground wave propagation?
- 2046. What is sky wave propagation?
- 2047. Why can radio waves travel long distances?
- 2048. What is wave propagation in the ionosphere?
- 2049. How do EM waves propagate in a medium?
- 2050. How do EM waves propagate in vacuum?
- 2051. What is radiation from an antenna?
- 2052. What is antenna?
- 2053. How are EM waves generated?
- 2054. How do EM waves transfer energy?
- 2055. What is attenuation?
- 2056. What is absorption of EM waves?
- 2057. What is dispersion?
- 2058. What is interference?
- 2059. What is diffraction?
- 2060. What is refraction of EM waves?
- 2061. What is reflection of EM waves?
- 2062. What is polarization of EM waves?
- 2063. Are EM waves transverse?
- 2064. What is the wavelength range of visible light?
- 2065. What are gamma rays?
- 2066. What are X-rays?
- 2067. What is ultraviolet radiation?
- 2068. What is visible light?
- 2069. What is infrared radiation?
- 2070. What are microwaves?
- 2071. What are radio waves?
- 2072. What is the order of EM waves by frequency?
- 2073. What is electromagnetic spectrum?
- 2074. How do Maxwell’s equations relate to the speed of light?
- 2075. What did Maxwell predict about EM waves?
- 2076. Why are Maxwell’s equations important?
- 2077. What is displacement current?
- 2078. How did Maxwell unify electricity and magnetism?
- 2079. What is Ampere-Maxwell law?
- 2080. What is Faraday’s law?
- 2081. State Gauss’ law for magnetism.
- 2082. State Gauss’ law for electric fields.
- 2083. What are Maxwell’s equations?
- 2084. What is the wave equation for electromagnetic waves?
- 2085. What is the relationship between electric and magnetic fields in an EM wave?
- 2086. What medium is needed for electromagnetic wave propagation?
- 2087. How do EM waves travel in space?
- 2088. What are oscillating electric and magnetic fields?
- 2089. What is the source of electromagnetic waves?
- 2090. What is the nature of electromagnetic waves—transverse or longitudinal?
- 2091. What is the speed of electromagnetic waves in vacuum?
- 2092. Who discovered electromagnetic waves?
- 2093. What are electromagnetic waves?
- 2094. What are applications of electromagnetism in daily life?
- 2095. What are superconductors?
- 2096. What is Hall effect?
- 2097. What is CRT (Cathode Ray Tube)?
- 2098. What is a magnetic compass?
- 2099. What is a multimeter?
- 2100. What is a voltmeter?