vu phy101 Final Term - Quiz No.3
vu phy101 Physics Quiz
This quiz belongs to book/course code vu phy101 Physics of vu organization. We have 6 quizzes available related to the book/course Physics. This quiz has a total of 10 multiple choice questions (MCQs) to prepare and belongs to topic Final Term. NVAEducation wants its users to help them learn in an easy way. For that purpose, you are free to prepare online MCQs and quizzes.
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Question 1: When an object (iron/tungsten) is heated, it emits light, it emits infrared (IR) light when it is heated at a temperature __________.
Below 800 degree C
Between 800 degree C to 1600 degree C
Between 1600 degree C to 2500 degree C
Above 2500 degree C
Question 2: A body is changing its direction but speed is constant, the object is:
accelerating
slowing down
speeding
Displacing
Question 3: The amplitude modulation frequency ranges from:
540 kHz to 1000 kHz
540 kHz to 1600 kHz
520 kHz to 1600 kHz
540 kHz to 1400 kHz
Question 4: An object moves in a circle at constant speed. The work done by the centripetal force is zero because:
the displacement for each revolution is zero
the average force for each revolution is zero
there is no firiction
the centripetal force is perpendicular to the velocity
Question 5: Which of the following statements are TRUE of sound waves? Identify all that apply.
Sound can travel through a vacuum
A sound wave is a transverse wave
A sound wave is a mechanical wave
To hear the sound of a tuning fork, the tines of the fork must move air from the fork to one's ear
Question 6: If Io is the peak value of an AC supply, then its rms value is given as lrms:
Io/(sqrt2)
Io/0.707
Io/2
(sqrt2) Io
Question 7: The light from any ordinarysource (such as a fame) is usually:
Plane polarized
Circularly polarized
Monochromatic
Un-polarized
Question 8: acceleration of an object must be zero at a point where:
the instantaneous velocity is zero but changing
the instantaneous velocity is constant
the average velocity is zero
the instantaneous velocity is not zero but changing
Question 9: Add two vectors of length 4 m & 5 m but their orientation is not known, The length after addition of these two vectors will be:
Less than 1 m
between 9 m and 1 m
between 9 m and 5 m
9m
Question 10: Coulomb's law is only true for point charges whose sizes are
large
very small
very large
medium
