CBSE Class 12 Physics Electromagnetic Waves Assignment Set B

Read and download free pdf of CBSE Class 12 Physics Electromagnetic Waves Assignment Set B. Get printable school Assignments for Class 12 Physics. Class 12 students should practise questions and answers given here for Chapter 8 Electromagnetic Waves Physics in Class 12 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 12 Physics prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations

Assignment for Class 12 Physics Chapter 8 Electromagnetic Waves

Class 12 Physics students should refer to the following printable assignment in Pdf for Chapter 8 Electromagnetic Waves in Class 12. This test paper with questions and answers for Class 12 Physics will be very useful for exams and help you to score good marks

Chapter 8 Electromagnetic Waves Class 12 Physics Assignment

CBSE Class 12 Physics Electromagnetic Waves Assignment Set B

 

Important Questions for NCERT Class 12 Physics Electromagnetic Waves


Question. An em wave is propagating in a medium with a velocity v- = v ^i . The instantaneous oscillating electric field of this em wave is along +y axis. Then the direction of oscillating magnetic field of the em wave will be along

(a) –z direction
(b) +z direction
(c) –y direction
(d) –x direction

Answer B


Question. In an electromagnetic wave in free space the root mean square value of the electric field is Erms = 6 V m–1. The peak value of the magnetic field is
(a) 2.83 × 10–8 T
(b) 0.70 × 10–8 T
(c) 4.23 × 10–8 T
(d) 1.41 × 10–8 T

Answer A
 

Question. Which of the following are not electromagnetic waves? 
(a) cosmic rays
(b) g-rays
(c) b-rays
(d) X-rays

Answer C


Question. Out of the following options which one can be used to produce a propagating electromagnetic wave ?
(a) A chargeless particle
(b) An accelerating charge
(c) A charge moving at constant velocity
(d) A stationary charge 

Answer B

Question. Light with an energy flux of 25 × 104 W m–2 falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm2, the average force exerted on the surface is
(a) 1.25 × 10–6 N
(b) 2.50 × 10–6 N
(c) 1.20 × 10–6 N
(d) 3.0 × 10–6

Answer B


Question. An electromagnetic wave of frequency u = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity e = 4.0. Then
(a) Wavelength is doubled and frequency becomes half.
(b) Wavelength is halved and frequency remains unchanged.
(c) Wavelength and frequency both remain unchanged.
(d) Wavelength is doubled and frequency unchanged

Answer B
 

Question. The electric field associated with an em wave in vacuum is given by [E = i ^ 40 cos (kz – 6 × 108t)]; where E, z and t are in volt/m, meter and seconds respectively. The value of wave vector k is
(a) 2 m–1
(b) 0.5 m–1
(c) 6 m–1
(d) 3 m–1 

Answer A
 

Question. Which of the following electromagnetic radiations have the smaller wavelength?   
(a) X-rays
(b) g-rays
(c) UV waves
(d) microwaves 

Answer  B
 

Question. According to Maxwell’s hypothesis, changing of electric field give rise to :    
(a) magnetic field
(b) pressure gradient
(c) charge
(d) voltage

Answer  A


Question. Frequency of infrared wave is approximately:   
(a) 1018 Hz
(b) 1014 Hz 
(c) 109 Hz
(d) 1016 Hz

 

Answer  B

Please refer to attached file for CBSE Class 12 Physics Electromagnetic Waves Assignment Set B

Chapter 01 Electric Charges and Fields
CBSE Class 12 Physics Electric Charges And Field Assignment

More Study Material

CBSE Class 12 Physics Chapter 8 Electromagnetic Waves Assignment

We hope you liked the above assignment for Chapter 8 Electromagnetic Waves which has been designed as per the latest syllabus for Class 12 Physics released by CBSE. Students of Class 12 should download and practice the above Assignments for Class 12 Physics regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 12 Physics practice sheet in Pdf. All questions have been designed for Physics by looking into the pattern of problems asked in previous year examinations. 

Assignment for Physics CBSE Class 12 Chapter 8 Electromagnetic Waves

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Chapter 8 Electromagnetic Waves Assignment Physics CBSE Class 12

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Chapter 8 Electromagnetic Waves Assignment CBSE Class 12 Physics

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CBSE Physics Class 12 Chapter 8 Electromagnetic Waves Assignment

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The Chapter 8 Electromagnetic Waves Class 12 Physics Assignments have been designed based on latest CBSE syllabus for Class 12 Physics issued for the current academic year

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