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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq
(a) has the longest wavelength among all colours except red and orange but the red colour is already used for brake light and stop light whereas orange colour is avoided due to its similarity with red
(b) light is most scattered by fog
(c) has the longest wavelength among all colours
(d) has the shortest wavelength among all colours
The correct answers to the above question in:
Answer: (a)
Yellow colour is used as fog light because of its longest wavelength it 63.33 penetrates well through dense fog.
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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
When a CD (Compact disc used in audio and video systems) is seen in Sunlight, rainbow-like colours is seen. This can be explained on the basis of the phenomenon of
a) Diffraction and transmission
b) Reflection and transmission
c) Reflection and diffraction
d) Refraction, diffraction and transmission
Answer »Answer: (c)
Question : 2
The technique to integrate and mark the image of a three dimensional object is
a) Photography
b) Lexieography
c) Audiography
d) Holography
Answer »Answer: (d)
Question : 3
Lightning can even burn a tree because it contains tremendous amount of
a) Electric energy
b) Chemical energy
c) Heat energy
d) Nuclear energy
Answer »Answer: (a)
Question : 4
Voice of your friend can be recognized by its
a) intensity
b) pitch
c) quality
d) velocity
Answer »Answer: (c)
Question : 5
The temperature of the sun is measured with
a) Pyrometer
b) Platinum thermometer
c) Gas theromometer
d) Vapour pressure thermometer
Answer »Answer: (a)
Question : 6
The small ozone layer on the top of stratosphere is crucial for human survival as it –
a) decreases oxygen in the atmosphere
b) increases the carbon dioxide in the atmosphere
c) increases carbon mono-oxide in the atmosphere
d) absorbs ultraviolet radiations
Answer »Answer: (d)
The ozone layer in stratosphere absorbs ultraviolet radiation in sun rays which are harmful. For human being.
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