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Light, Sound and Heat TNPSC Group 1 Questions
TNPSC Group 1 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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7.
The process in which heat is transmitted without the aid of the intervening medium is
A.
Conduction
B.
Convection
C.
Radiation
D.
None of these
😑
View Answer
Rough Work
Error
ANSWER
:
C. Radiation
8.
When a mirror is rotated by an angle of Ѳ, the reflected ray will rotate by
A.
0
o
B.
Ѳ/2
C.
Ѳ
D.
2Ѳ
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Rough Work
Error
ANSWER
:
D. 2Ѳ
9.
Sound is not audible in moon. Why?
A.
there is no plantation in moon
B.
moon does not have atmosphere
C.
moon is similar than earth
D.
none of these
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View Answer
Rough Work
Error
ANSWER
:
B. moon does not have atmosphere
10.
Heat waves are otherwise known as
A.
Infra-red rays
B.
Ultra-violent waves
C.
Solar radiation
D.
X-rays
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View Answer
Rough Work
Error
ANSWER
:
C. Solar radiation
11.
Light from the Laser is
A.
Monochromatic
B.
Composite
C.
Dispersed light
D.
Incoherent
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View Answer
Rough Work
Error
ANSWER
:
A. Monochromatic
12.
suppose a rocket ship is receding from the earth at a speed of 1/10 of velocity of light. A light in the rocket ship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
A.
blue
B.
orange
C.
yellow
D.
yellow orange
😑
View Answer
Rough Work
Error
ANSWER
:
C. yellow
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