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  • 1(current)
Q. No.
The frequency order for Î³-rays (b), X-rays (a), and UV-rays (c) is:
1. b>a>c 2. a>b>c
3. c>b>a 4. a>c>b
Subtopic:  Electromagnetic Spectrum |
 82%
From NCERT
AIPMT - 2000
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The EM wave with the shortest wavelength among the following is:
1. Ultraviolet rays 
2. X-rays
3. Gamma-rays
4. Microwaves  
Subtopic:  Electromagnetic Spectrum |
 78%
From NCERT
NEET - 2020
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Which colour of the light has the longest wavelength?

1. violet 2. red
3. blue 4. green
Subtopic:  Electromagnetic Spectrum |
 88%
From NCERT
NEET - 2019
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The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is:
1. gamma rays, ultraviolet, infrared, microwaves.
2. microwaves, gamma rays, infrared, ultraviolet.
3. infrared, microwave, ultraviolet, gamma rays.
4. microwave, infrared, ultraviolet, gamma rays.
Subtopic:  Electromagnetic Spectrum |
 84%
From NCERT
AIPMT - 2011
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The energy of the EM waves is of the order of 15 keV. To which part of the spectrum does it belong?
1. X-rays
2. Infrared rays
3. Ultraviolet rays
4. Î³-rays

Subtopic:  Electromagnetic Spectrum |
 59%
From NCERT
NEET - 2015
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Match List I with List II.
List - I (Electromagnetic waves) List - II (Wavelength)
(a) AM radio waves (i) 10−10 m
(b) Microwaves (ii) 102 m
(c) Infrared radiation (iii) 10−2 m
(d) X-rays (iv) 10−4 m
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iv) (iii) (ii) (i)
3. (iii) (ii) (i) (iv)
4. (iii) (iv) (ii) (i)
Subtopic:  Electromagnetic Spectrum |
 73%
From NCERT
NEET - 2022
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The biological importance of the ozone layer is:

1. it stops ultraviolet rays.
2. ozone layer reduces the greenhouse effect.
3. ozone layer reflects radio waves.
4. ozone layer controls O2/H2 ratio in the atmosphere.


 

Subtopic:  Electromagnetic Spectrum |
 86%
From NCERT
AIPMT - 2001
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