The frequency order for \(\gamma\) - 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 |
 80%
From NCERT
AIPMT - 2000
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The E.M wave with the shortest wavelength among the following is:

1. Ultraviolet rays  2. X-rays
3. Gamma-rays  4. Microwaves  
Subtopic:  Electromagnetic Spectrum |
 75%
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 |
 87%
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 |
 83%
From NCERT
AIPMT - 2011
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The energy of the EM waves is of the order of \(15~\mathrm{keV}\). To which part of the spectrum does it belong?
1. X-rays
2. Infrared rays
3. Ultraviolet rays
4. \(\gamma\)-rays

Subtopic:  Electromagnetic Spectrum |
 56%
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) \(10^{-10}~\mathrm{m}\)
(b) Microwaves (ii) \(10^{2} \mathrm{~m}\)
(c) Infrared radiation (iii) \(10^{-2} \mathrm{~m}\)
(d) X-rays (iv) \(10^{-4} \mathrm{~m}\)

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 |
 69%
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 \(\mathrm{O}_2 / \mathrm{H}_2\) ratio in the atmosphere.


 

Subtopic:  Electromagnetic Spectrum |
 85%
From NCERT
AIPMT - 2001
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