1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
We consider the radiation emitted by the human body. Which one of the following statements is true?
A
The radiation emitted is in the infra-red region
B
The radiation emitted only during the day
C
The radiation is emitted during the summers and absorbed during the winters
D
The radiation emitted lies in the ultraviolet region and hence is not visible
2
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
$$\overrightarrow B $$
3
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.
4
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.
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