set 2 MCQ Questions & Answers Detailed Explanation
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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq
(a) the person can read the letters of 6 m which the normal eye can read from 12 m
(b) the person can read the letters of 6 inches from a distance of 12 m
(c) the person can read the letters of 12 inches from 6 m
(d) the focal length of eye lens had become half that of the normal eye
The correct answers to the above question in:
Answer: (a)
Discuss Form
Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
What should be refractive index of a transparent medium to be invisible in vacuum?
a) > 1
b) 1
c) < 1
d) None of these
Answer »Answer: (b)
To be invisible in vacuum, µ of medium must be equal to µ of vacuum, which is 1.
Question : 2
To hear a clear echo, the minimum distance between the reflecting surface and the observer should be
a) 165 metre
b) 16.5 feet
c) 165 feet
d) 16.5 metre
Answer »Answer: (d)
Question : 3
A hydrogen inflated polythene balloon is released from the surface of the Earth. As the balloon rises to an altitude up in the atmosphere, it will
a) Flatten into disc like shape
b) Increase in size
c) Decrease in size
d) Maintain the same size and shape
Answer »Answer: (b)
Question : 4
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 : 5
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 : 6
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)
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