SATHEE: electromagnetic-waves Question 27

electromagnetic-waves Question 27

Question: Q. 6. Name the EM waves which are suitable for radar system used in aircraft navigation. Write the range of frequency of these waves.

R [Delhi I, II, III 2014]

Show Answer

Solution:

Ans. Microwaves ….. $1 / 2$ frequency range $10^{10}$ to $10^{12} Hz$ . ….. $1 / 2$ [CBSE Marking Scheme 2014]

[A] Q. 7. To which part of the electromagnetic spectrum does a wave of frequency $5 \times 10^{19} Hz$ belong ?

R [O.D. I, II, III 2014]

Ans. $X$ rays/Gamma rays.

[CBSE Marking Scheme 2014]

Detailed answer :

In electromagnetic spectrum, there is no sharp boundary of frequency among $X$ -rays/Gamma rays as frequency range of $X$ -rays is $10^{20} Hz - 10^{16}$ $Hz$ where as Gamma rays frequency ranges from $10^{22} Hz - 10^{19} Hz$ , so waves with frequency $5 \times$ $10^{19} Hz$ belongs to both $X$ rays/Gamma rays of electromagnetic spectrum.

[A]Q. 8. Arrange the following electromagnetic waves in order of increasing frequency :

R] [Foreign Set I 2014] $γ$ rays, microwaves, infrared rays and ultraviolet rays.

Ans. Microwaves < Infrared rays < Ultraviolet rays $<$ $γ$ -rays.

$10^{13} Hz - 10^{9} Hz < 10^{14} Hz - 10^{12} Hz < 10^{17} Hz$ $- 10^{15} Hz < 10^{22} Hz - 10^{19} Hz 1$

[CBSE Marking Scheme, 2014]

Electromagnetic Waves

electromagnetic-waves Question 27

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Electromagnetic Waves

electromagnetic-waves Question 27

Table of Contents

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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