Electromagnetic Spectrum & Atmosphere

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)P-II, Q-IV, R-III, S-I
• (b)P-I, Q-II, R-III, S-IV
• (c)P-I, Q-IV, R-II, S-III
• (d)P-II, Q-I, R-IV, S-III

Electromagnetic Spectrum & Atmosphere · How each wave is produced

• (a)A-III, B-I, C-II, D-IV
• (b)A-III, B-IV, C-I, D-II
• (c)A-IV, B-I, C-II, D-III
• (d)A-IV, B-III, C-II, D-I

Electromagnetic Spectrum & Atmosphere · How each wave is produced

• (a)A-IV, B-II, C-I, D-III
• (b)A-IV, B-III, C-I, D-II
• (c)A-IV, B-I, C-II, D-III
• (d)A-II, B-IV, C-III, D-I

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)$\lambda_4 < \lambda_3 < \lambda_2 < \lambda_1$
• (b)$\lambda_4 < \lambda_2 < \lambda_3 < \lambda_1$
• (c)$\lambda_3 < \lambda_4 < \lambda_2 < \lambda_1$
• (d)$\lambda_4 < \lambda_3 < \lambda_1 < \lambda_2$

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-rays
• (b)Gamma rays
• (c)Ultraviolet rays
• (d)Microwaves

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)$\lambda_1 < \lambda_2 < \lambda_3 < \lambda_4$
• (b)$\lambda_2 < \lambda_1 < \lambda_4 < \lambda_3$
• (c)$\lambda_4 < \lambda_3 < \lambda_2 < \lambda_1$
• (d)$\lambda_4 < \lambda_3 < \lambda_1 < \lambda_2$

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
• (b)(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
• (c)(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
• (d)(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)A - IV, B - III, C - I, D - II
• (b)A - II, B - IV, C - III, D - I
• (c)A - III, B - II, C - I, D - IV
• (d)A - IV, B - I, C - II, D - III

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
• (b)(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
• (c)(A)-(IV), (B)-(I), (C)-(III), (D) -(II)
• (d)(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)Both $\mathrm{A}$ and $\mathrm{R}$ are true but $\mathrm{R}$ is NOT the correct explanation of $\mathrm{A}$
• (b)$\mathrm{A}$ is true but $\mathrm{R}$ is false
• (c)Both $\mathrm{A}$ and $\mathrm{R}$ are true and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$
• (d)$\mathrm{A}$ is false but $\mathrm{R}$ is true

Electromagnetic Spectrum & Atmosphere · How each wave is produced

• (a)A-I, B-III, C-IV, D-II
• (b)A-IV, B-III, C-II, D-I
• (c)A-IV, B-I, C-II, D-III
• (d)A-I, B-II, C-III, D-IV

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)$\lambda$visible < $\lambda$X-ray < $\lambda$gamma-ray < $\lambda$microwave
• (b)$\lambda$gamma-ray < $\lambda$X-ray < $\lambda$visible < $\lambda$microwave
• (c)$\lambda$X-ray < $\lambda$gamma-ray < $\lambda$visible < $\lambda$microwave
• (d)$\lambda$microwave < $\lambda$visible < $\lambda$gamma-ray < $\lambda$X-ray

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
• (b)(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
• (c)(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
• (d)(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
• (b)(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
• (c)(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
• (d)(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)Reflection
• (b)Refraction
• (c)Diffraction
• (d)Scattering

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
• (b)(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)
• (c)(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
• (d)(a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)

Electromagnetic Spectrum & Atmosphere · How each wave is produced

• (a)(a)-(vi), (b)-(v), (c)-(i), (d)-(iv)
• (b)(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
• (c)(a)-(ii), (b)-(iv), (c)-(vi), (d)-(iii)
• (d)(a)-(vi), (b)-(iv), (c)-(i), (d)-(v)

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)Microwaves
• (b)Ultraviolet rays
• (c)X-rays
• (d)Gamma-rays

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)$\lambda$radio waves > $\lambda$micro waves > $\lambda$visible > $\lambda$x-rays
• (b)$\lambda$visible > $\lambda$x-rays > $\lambda$radio waves > $\lambda$micro waves
• (c)$\lambda$visible < $\lambda$micro waves < $\lambda$radio waves < $\lambda$x-rays
• (d)$\lambda$x-rays < $\lambda$micro waves < $\lambda$radio waves < $\lambda$visible

Electromagnetic Spectrum & Atmosphere · Greenhouse, ozone and radio propagation

• (a)amplitude remains constant but frequency. changes according to information signal
• (b)amplitude of carrier wave changes according to information signal
• (c)both amplitude and frequency changes according to information signal
• (d)both amplitude and frequency do not change according to information signal

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
• (b)(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
• (c)(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
• (d)(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)blue
• (b)violet
• (c)red
• (d)green

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)C, A, B, D
• (b)B, A, D, C
• (c)D, B, A, C
• (d)A, B, D, C

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)transferring electrons from lower to higher energy levels in water molecule
• (b)giving rotational energy to water molecules
• (c)giving vibrational energy to water molecules
• (d)giving translational energy to water molecules

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)Ultraviolet rays
• (b)$\gamma$-rays
• (c)X-rays
• (d)Infra-red rays

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)R, M, I, V, U, X and G
• (b)M, R, V, X, U, G and I
• (c)G, X, U, V, I, M and R
• (d)I, M, R, U, V, X and G

Electromagnetic Spectrum & Atmosphere · How each wave is produced

Numerical answer type. Work it out, then open the answer.

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)(I)-(A), (II)-(B), (III)-(B), (IV)-(C)
• (b)(I)-(A), (II)-(B), (III)-(C), (IV)-(C)
• (c)(I)-(D), (II)-(C), (III)-(A), (IV)-(B)
• (d)(I)-(B), (II)-(A), (III)-(D), (IV)-(A)

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)$1 - iv,\ 2 - iii,\ 3 - ii,\ 4 - i$
• (b)$1 - i,\ 2 - ii,\ 3 - iv,\ 4 - iii$
• (c)$1 - iii,\ 2 - ii,\ 3 - i,\ 4 - iv$
• (d)$1 - i,\ 2 - ii,\ 3 - iii,\ 4 - iv$

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-ray region
• (b)Ultra violet region
• (c)Infrared region
• (d)Visible region

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)Microwaves are heat waves, so always produce heating.
• (b)Infra-red waves produce heating in a microwave oven.
• (c)The frequency of the microwaves must match the resonant frequency of the water molecules.
• (d)The frequency of the microwaves has no relation with natural frequency of water molecules.

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)Statement-1 is true, Statement-2 is true and Statement-2 is the correct explanation of Statement-1
• (b)Statement-1 is false, Statement-2 is true.
• (c)Statement-1 is true, Statement-2 is false.
• (d)Statement-1 is true, Statement-2 is true but Statement-2 is not the correct explanation of Statement-1

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)microwave, infrared, ultraviolet, gamma rays
• (b)gamma rays, ultraviolet, infraref, microwaves
• (c)microwaves, gamma rays, infrared, ultraviolet
• (d)infrared, microwave, ultraviolet, gamma rays

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)$\lambda_m > \lambda_x > \lambda_v$
• (b)$\lambda_m > \lambda_v > \lambda_x$
• (c)$\lambda_v > \lambda_x > \lambda_m$
• (d)$\lambda_v > \lambda_m > \lambda_x$

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-rays
• (b)$\gamma$-rays
• (c)$\beta$-rays
• (d)heat rays

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (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

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-rays
• (b)Ultraviolet rays
• (c)$\gamma$-rays
• (d)Cosmic rays

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)cosmic rays
• (b)gamma rays
• (c)$\beta$-rays
• (d)$X$-rays

Electromagnetic Spectrum & Atmosphere · Greenhouse, ozone and radio propagation

• (a)infra-red rays
• (b)ultra violet rays
• (c)X-rays
• (d)radio waves.

Electromagnetic Spectrum & Atmosphere · Greenhouse, ozone and radio propagation

• (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 atmosphere.

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)b $>$ a $>$ c
• (b)a $>$ b $>$ c
• (c)c $>$ b $>$ a
• (d)a $>$ c $>$ b

Electromagnetic Spectrum & Atmosphere · Greenhouse, ozone and radio propagation

• (a)less than $3 \times 10^{-7}\text{ m}$
• (b)equal to $3 \times 10^{-7}\text{ m}$
• (c)more than $3 \times 10^{-7}\text{ m}$
• (d)all of the above

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-rays
• (b)$\gamma$-rays
• (c)UV waves
• (d)microwaves

Electromagnetic Spectrum & Atmosphere · Greenhouse, ozone and radio propagation

• (a)sky wave
• (b)ground wave
• (c)sea wave
• (d)both (1) and (2)

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)cosmic rays
• (b)X-rays
• (c)$\gamma$-rays
• (d)infra-red radiations

Electromagnetic Spectrum & Atmosphere · Uses of EM waves

• (a)$10^{15}$
• (b)$10^{14}$
• (c)$10^{13}$
• (d)$10^{12}$

Electromagnetic Spectrum & Atmosphere · Order of the spectrum and wavelength ranges

• (a)X-rays
• (b)$\gamma$-rays
• (c)Microwaves
• (d)Radiowaves