1
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
$$L/R$$
2
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.
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A ray of light travelling in air have wavelength $$\lambda $$, frequency n, velocity v and intensity $$I$$. If this ray enters into water then these parameters are $$\lambda $$', n', v' and $$I$$' respectively. Which relation is correct from following ?
A
$$\lambda $$ = $$\lambda $$'
B
n = n'
C
v = v'
D
$$I$$ = $$I$$'.
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Optical fibre are based on
A
total internal reflection
B
less scattering
C
refraction
D
less absorption coefficient.
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