1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A capacitor of capacity C has reactance X. If capacitance and frequency become double then reactance will be
A
4X
B
X/2
C
X/4
D
2X
2
AIPMT 2001
MCQ (More than One Correct Answer)
+4
-1
The value of quality factor is
A
$${{\omega R} \over L}$$
B
$${1 \over {\omega RC}}$$
C
$$\sqrt {LC} $$
D
$$L/R$$
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Biological inportance of ozone layer is
A
it stops ultraviolet rays
B
ozone layer reduces green house effect
C
ozone layer reflects radio waves
D
ozone layer controls O2/H2 ratio in atmosphertte.
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A disc is placed on a surface of pond which has refractive index 5/3. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc needed so that light is not coming out is,
A
$$\infty $$
B
3 m
C
6 m
D
4 m
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