1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
If $$\lambda $$v, $$\lambda $$x and $$\lambda $$m represent the wavelengths of visible light, X-rays and microwaves respectively, then
A
$${\lambda _m} > {\lambda _x} > {\lambda _v}$$
B
$${\lambda _m} > {\lambda _v} > {\lambda _x}$$
C
$${\lambda _v} > {\lambda _x} > {\lambda _m}$$
D
$${\lambda _v} > {\lambda _m} > {\lambda _x}$$
2
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
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which of the following rays are not electromagnetic waves ?
A
X-rays
B
$$\gamma $$-rays
C
$$\beta $$-rays
D
heat rays
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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