You Are On Question Answer Bank SET 2020
101001. Irregular and partial reflection of light during its passing through a medium is known as?
101002. The colour produced by the mixing of green and red is?
101003. A green leaf appears green because?
Answer: it reflects green colour
101004. The beautiful colour of the soap foam and oil spread water is due to?
Answer: interference of light
101005. How does a green leaf appears when it is viewed in a blue light?
101006. The colour used in signal lamp is?
101007. The colour of the head lamp in motor vehicles is?
101008. The heat carried in the solar rays is?
Answer: Infrared radiation
101009. Sun burn is caused by which radiation?
101010. At a place when green, red and blue rays overlap, which colour will be seen?
101011. The distribution of the component colours of a composite light in the order of their wavelength or frequency as a result of dispersion is called?
101012. When wavelength increases the rate of scattering?
101013. The property of certain material by virtue of which they absorb light of shorter wavelength and emit light of longer wavelength is called?
101014. Why can we see pictures with natural effect on a television?
Answer: Due to persistance of vision
101015. The colour of light obtained by mixing of any two primary colour of light is?
Answer: Secondary colour
101016. Whose theory is called the Quantum theory of light?
Answer: Max Planck’s theory
101017. Why lightning is observed earlier than the thunder is heard?
Answer: Because light travels faster than sound
101018. A photoelectric cell converts?
Answer: Light energy into electric energy
101019. Tyndall effect is due to?
Answer: Brownian Motion
101020. If a surface absorbs all colours, it sees as?
101021. If a surface reflects all colours, it sees as?
101022. Mirage is formed by?
Answer: Refraction and total internal reflection
101023. Why is the sky and sea blue in colour?
Answer: Due to the scattering of light
101024. The formation of rainbow is due to which phenomenon of light?
Answer: Refraction and dispersion
101025. The colour seen on the outer edge of the rainbow is?
101026. Which colour is obtained when blue light and green light of the same intensities are mixed together?
101027. The rays which appears to originate outside the earth?
Answer: the cosmic rays
101028. In a doctor’s stethescope the sound is intensified because of?
Answer: reflection of sound
101029. When sunlight passes through atmosphere, the colour which scatters most is?
101030. What is called interference?
Answer: The modification of intensity in the region of superimposition.
101031. Who suggested the wave theory of light?
Answer: Christian Huygens
101032. What is the name of the scientist who suggested that the velocity of light is maximum while propagating through vacuum?
101033. The intensity of light depends on?
101034. What is the reason for the formation if beautiful colours on a soap bubble or on a thin film of oil when spread over water?
101035. Who put forward the theory of electromagnetic radiation?
101036. Who discovered the photoelectric effect?
Answer: Heinrich Hertz
101037. What is the velocity of light in vacuum?
Answer: 3 × 108 m/sec.
101038. Bending or spreading of light around tiny opaque objects are called?
101039. Which always reduces the velocity of electromagnetic waves?
101040. The unit of electromagnetic radiants having a certain wavelength and a definite amount of energy is?
101041. What is directly proportional to the energy of a photon?
101042. Shadows have fuzzy uneven edges because of?
101043. കേരളം സംസ്ഥാനം നിലവിൽ വന്നത് ? [Keralam samsthaanam nilavil vannathu ?]
Answer: 1956 നവംബർ 1 [1956 navambar 1]
101044. കേരള തലസ്ഥാനം ഏത് ? [Kerala thalasthaanam ethu ?]
Answer: തിരുവനന്തപുരം [Thiruvananthapuram]
101045. കേരളത്തിന്റെ വിസ്തീർണ്ണം എത്ര ? [Keralatthinte vistheernnam ethra ?]
Answer: 38863 ചതുരശ്ര . കി . മീ [38863 chathurashra . Ki . Mee]
101046. കേരളത്തിലെ കേരളത്തിന്റെ ജനസംഖ്യ എത്ര ? [Keralatthile keralatthinte janasamkhya ethra ?]
101047. കേരളത്തിലെ റവന്യു ഡിവിഷൻ എത്ര ? [Keralatthile ravanyu divishan ethra ?]
101048. കേരളത്തിലെ താലൂക്കുകൾ എത്ര ? [Keralatthile thaalookkukal ethra ?]
101049. കേരളത്തിലെ ബ്ലോക്ക് പഞ്ചായത്ത് എത്ര ? [Keralatthile blokku panchaayatthu ethra ?]
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101050. കേരളത്തിലെ ഗ്രാമ പഞ്ചായത്ത് എത്ര ? [Keralatthile graama panchaayatthu ethra ?]
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