If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Physics Chapterwise. In this article of AKVTutorials, you will get Electromagnetic Waves CBSE Class 12 Physics MCQ Questions with Answer Keys Solutions .
MCQ Questions for Class 12 Physics Chapter 8 Question No 11:
Which part of electromagnetic spectrum can be detected by human eye?
Option A : Gamma rays
Option B : X- rays
Option C : Visible rays
Option D : UV rays
Show/Hide Answer
Option C : Visible rays
MCQ Questions for Class 12 Physics Chapter 8 Question No 12:
To treat cancer and tumor in radiography which rays of em spectrum are used?
Option A : X-rays
Option B : Radio waves
Option C : Gamma rays
Option D : Visible rays
Show/Hide Answer
Option C : Gamma rays
MCQ Questions for Class 12 Physics Chapter 8 Question No 13:
For an EM wave propagating along x-axis Emax= 30V/m, the maximum value of magnetic field is
Option A : 30 Tesla
Option B : 108 Tesla
Option C : 107 Tesla
Option D : 10-7 Tesla
Show/Hide Answer
Option D : 10-7 Tesla
MCQ Questions for Class 12 Physics Chapter 8 Question No 14:
An oscillating charge particle radiates
Option A : Kinetic energy
Option B : Potential energy
Option C : Heat
Option D : EM waves
Show/Hide Answer
Option D : EM waves
MCQ Questions for Class 12 Physics Chapter 8 Question No 15:
A) The wavelength of microwaves is greater than that of
B) The wavelength of IR rays is less than that of UV-rays
C) The wavelength of microwaves is less than that of IR rays
D) Gamma ray has the shortest wavelength in the electromagnetic spectrum
Option A : a and b are true
Option B : b and c are true
Option C : c and d are true
Option D : a and d are true
Show/Hide Answer
Option D : a and d are true
MCQ Questions for Class 12 Physics Chapter Question No 16:
If Vector E and B represent the electric and magnetic fields in an electromagnetic wave, then the direction of propagation of electromagnetic wave will be:
Option A : In the direction of vector E
Option B : In the direction of vector B
Option C : In the direction of vector E X B
Option D : None of these
Show/Hide Answer
Option C : In the direction of vector E X B
MCQ Questions for Class 12 Physics Chapter 8 Question No 17:
X-rays were discovered by
Option A : Becquerel
Option B : Roentgen
Option C : Marie Curie
Option D : Von Laue
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Option B : Roentgen
MCQ Questions for Class 12 Physics Chapter 8 Question No 18:
The dielectric constant of air is 1.006. The speed of electromagnetic wave travelling in air is a×108 ms -1 where ‘a’ is about
Option A : 3
Option B : 3.88
Option C : 2.5
Option D : 3.2
Show/Hide Answer
Option A : 3
MCQ Questions for Class 12 Physics Chapter 9 Question No 19:
Which of the following is called heat radiation?
Option A : X- rays
Option B : Y-rays
Option C : Infrared radiation
Option D : Microwave
Show/Hide Answer
Option C : Infrared radiation
MCQ Questions for Class 12 Physics Chapter 9 Question No 20:
From Maxwell’s hypothesis, a charging electric field
Option A : An electric field
Option B : An induced emf
Option C : A magnetic field
Option D : A magnetic dipole
Show/Hide Answer
Option C : A magnetic field
| CBSE Class 12 Physics Chapterwise MCQ |
|---|
| 1 : Electric Charge & Fields MCQs | 1 to 10 | 11 to 20 |
| 2 : Electrostatics Potential and Capacitance MCQs | 1 to 10 | 11 to 20 |
| 3 : Current Electricity MCQs | 1 to 10 | 11 to 20 |
| 4 : Moving charges and Magnetism MCQs | 1 to 10 | 11 to 20 |
| 5 : Magnetism and Matter MCQs | 1 to 10 | 11 to 20 |
| 6 : Electromagnetic Induction MCQs | 1 to 10 | 11 to 20 |
| 7 : Alternating Current MCQs | 1 to 10 | 11 to 20 |
| 8 : Electromagnetic Waves MCQs | 1 to 10 | 11 to 20 |
| 9 : Ray Optics and Optical Instruments MCQs | 1 to 10 | 11 to 20 |
| 10 : Wave Optics MCQs | 1 to 10 | 11 to 20 |
| 11 : Dual Nature of Radiation MCQs | 1 to 10 | 11 to 20 |
| 12 : Atoms MCQs | 1 to 10 | 11 to 20 |
| 13 : Nuclei MCQs | 1 to 10 | 11 to 20 |
| 14 : Semi Conductor Electronics MCQs | 1 to 10 | 11 to 20 |
| 15 : Communication Systems MCQs | 1 to 10 | 11 to 20 |
