1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similar poles are same side then its time period of oscillation is T1. Now the polarity of one of the magnet is reversed then time period of oscillation is T2, then
A
T1 < T2
B
T1 = T2
C
T1 > T2
D
T2 = $$\infty $$
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
For a series LCR circuit the power loss at resonance is
A
$${{{V^2}} \over {\left[ {\omega L - {1 \over {\omega C}}} \right]}}$$
B
$${I^2}L\omega $$
C
$${I^2}R$$
D
$${{{V^2}} \over {C\omega }}$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
The velocity of electromagnetic wave is parallel to
A
$$\overrightarrow B \times \overrightarrow E $$
B
$$\overrightarrow E \times \overrightarrow B $$
C
$$\overrightarrow E $$
D
$$\overrightarrow B $$
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
What is the cause of Green house effect ?
A
infra-red rays
B
ultra violet rays
C
X-rays
D
radio waves.
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