The electromagnetic spectrum — practice questions

Question 1 · difficulty L1 · recall

Which order goes from lower to higher frequency?

• A. Radio, microwave, infrared, visible, ultraviolet, X-ray, gamma
• B. Gamma, X-ray, ultraviolet, visible, infrared, microwave, radio
• C. Radio, infrared, microwave, visible, X-ray, ultraviolet, gamma
• D. Microwave, radio, visible, infrared, ultraviolet, gamma, X-ray

Question 2 · difficulty L1 · understanding

Which radiation has the longest wavelength among the following?

• A. Visible light
• B. Radio waves
• C. X-rays
• D. Gamma rays

Question 3 · difficulty L2 · understanding

Which radiation has higher frequency than visible light but lower than X-rays?

• A. Infrared
• B. Microwaves
• C. Ultraviolet
• D. Radio

Question 4 · difficulty L2 · application

Infrared radiation has wavelength that is generally

• A. shorter than X-rays
• B. equal to gamma rays
• C. shorter than ultraviolet
• D. longer than visible light

Question 5 · difficulty L2 · understanding

Match List I with List II : LIST I EM-Wave LIST II Wavelength Range A. Infra-red I. $$<10^{-3}$$ nm B. Ultraviolet II. 400 nm to 1 nm C. X-rays III. 1 mm to 700 nm D. Gamma rays IV. 1 nm to $$10^{-3}$$ nm Choose the correct answer from the options given below :

• 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)

Question 6 · difficulty L2 · understanding

Arrange the following in the ascending order of wavelength: A. Gamma rays $$\left(\lambda_1\right)$$ B. $$x$$ - rays $$\left(\lambda_2\right)$$ C. Infrared waves $$\left(\lambda_3\right)$$ D. Microwaves $$\left(\lambda_4\right)$$ Choose the most appropriate answer from the options given below

• 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. $$\lambda_4<\lambda_3<\lambda_1<\lambda_2$$

Question 7 · difficulty L2 · understanding

Match List I with List II of Electromagnetic waves with corresponding wavelength range : List I List II (A) Microwave (I) $400 \mathrm{~nm}$ to $1 \mathrm{~nm}$ (B) Ultraviolet (II) $1 \mathrm{~nm}$ to $10^{-3} \mathrm{~nm}$ (C) X-Ray (III) $1 \mathrm{~mm}$ to $700 \mathrm{~nm}$ (D) Infra-red (IV) $0.1 \mathrm{~m}$ to $1 \mathrm{~mm}$ Choose the correct answer from the options given below:

• 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)

Question 8 · difficulty L2 · understanding

Match List I with List II : List I List II A. Microwaves I. Radio active decay of the nucleus B. Gamma rays II. Rapid acceleration and deceleration of electron in aerials C. Radio waves III. Inner shell electrons D. X-rays IV. Klystron valve Choose the correct answer from the options given below :

• 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

Question 9 · difficulty L2 · understanding

Match List I with List II LIST I LIST II A. Microwaves I. Physiotherapy B. UV rays II. Treatment of cancer C. Infra-red light III. Lasik eye surgery D. X-ray IV. Aircraft navigation Choose the correct answer from the options given below:

• 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

Question 10 · difficulty L2 · understanding

Match List - I with List - II : List - I List - II (a) UV rays (i) Diagnostic tool in medicine (b) X-rays (ii) Water purification (c) Microwave (iii) Communication, Radar (d) Infrared wave (iv) Improving visibility in foggy days Choose the correct answer from the options given below :

• 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)