1
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
A spring of force constant $$800$$ $$N/m$$ has an extension of $$5$$ $$cm.$$ The work done in extending it from $$5$$ $$cm$$ to $$15$$ $$cm$$ is
A
$$16J$$
B
$$8J$$
C
$$32J$$
D
$$24J$$
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is more close to a black body?
A
black board paint
B
green leaves
C
black holes
D
red roses
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Infrared radiation is detected by
A
spectrometer
B
pyrometer
C
nanometer
D
photometer
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
In a simple harmonic oscillator, at the mean position
A
kinetic energy is minimum, potential energy is maximum
B
both kinetic and potential energies are maximum
C
kinetic energy is maximum, potential energy is minimum
D
both kinetic and potential energies are minimum.

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