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Light, Sound and Heat TNPSC Group 2 2A Questions
TNPSC Group 2 2A SYLLABUS
Physics
Nature of Universe
General Scientific Laws
Mechanics and Properties of Matter
Force, Motion and Energy
Everyday application of the basic principles of Mechanics
Electricity and Magnetism
Light, Sound and Heat
Nuclear Physics and Laser
Electronics and Communications
Light, Sound and Heat MCQ Questions
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1.
The speed of light will be minimum while passing through
A.
glass
B.
vacuum
C.
water
D.
air
😑
View Answer
Rough Work
Error
ANSWER
:
A. glass
2.
"Decibal" is a unit of
A.
sound intensity
B.
Light
C.
Heat
D.
Electricity
😑
View Answer
Rough Work
Error
ANSWER
:
A. sound intensity
3.
The unit of refractive index is
A.
Metre
B.
Degree
C.
No unit
D.
Second
😑
View Answer
Rough Work
Error
ANSWER
:
C. No unit
4.
Light year is the unit of
A.
distance
B.
time
C.
weight
D.
intensity of light
😑
View Answer
Rough Work
Error
ANSWER
:
A. distance
5.
The unit of power of a lens is
A.
decibal
B.
pascal
C.
diopter
D.
stoke
😑
View Answer
Rough Work
Error
ANSWER
:
C. diopter
6.
Doppler effect in sound produces apparent change in
A.
amplitude
B.
frequency
C.
wavelength
D.
intensity
😑
View Answer
Rough Work
Error
ANSWER
:
B. frequency
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