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Light, Sound and Heat TNPSC Group 4 VAO Questions
TNPSC Group 4 VAO SYLLABUS
Physics
Nature of Universe
Measurement of Physical Quantities
General Scientific Laws
Motion-Force, Pressure and Energy
Everyday application of the basic principles of Mechanics
Electricity and Magnetism
Light, Sound and Heat
Nuclear Physics in our daily life
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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