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Unit V: Electromagnetic waves
- Online Test
Unit V: Electromagnetic waves
TEST : 1
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q1.
The dimension of 1/µ
0
ε
0
is
A.
[L T
-1
]
B.
[L
2
T
−2
]
C.
[L
−1
T]
D.
[L
−2
T
2
]
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q2.
If the amplitude of the magnetic field is 3 × 10
−6
T, then amplitude of the electric field for a electromagnetic waves is
A.
100 V m
−1
B.
300 V m
−1
C.
600 V m
−1
D.
900 V m
−1
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q3.
Which of the following electromagnetic radiation is used for viewing objects through fog
A.
microwave
B.
gamma rays
C.
X- rays
D.
infrared
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q4.
Which of the following are false for electromagnetic waves
A.
transverse
B.
mechanical waves
C.
longitudinal
D.
produced by accelerating charges
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q5.
Consider an oscillator which has a charged particle and oscillates about its mean position with a frequency of 300 MHz. The wavelength of electromagnetic waves produced by this oscillator is
A.
1 m
B.
10 m
C.
100 m
D.
1000 m
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q6.
The electric and the magnetic field, associated with an electromagnetic wave, propagating along X axis can be represented by
A.
B.
C.
D.
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q7.
In an electromagnetic wave in free space the rms value of the electric field is 3 V m
−1
. The peak value of the magnetic field is
A.
1.414 × 10
−8
T
B.
1.0 × 10
−8
T
C.
2.828 × 10
−8
T
D.
2.0 × 10
−8
T
View Solution
Add Work Space
Answer :
Option A
Explaination / Solution:
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q8.
During the propagation of electromagnetic waves in a medium:
A.
a. electric energy density is double of the magnetic energy density
B.
b. electric energy density is half of the magnetic energy density
C.
c. electric energy density is equal to the magnetic energy density
D.
d. both electric and magnetic energy densities are zero
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q9.
If the magnetic monopole exists, then which of the Maxwell’s equation to be modified?.
A.
B.
C.
D.
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
No Explaination.
TN State Board
TN 12th Standard
Physics
Unit V: Electromagnetic waves
Prepare / Learn
Q10.
A radiation of energy E falls normally on a perfectly reflecting surface. The momentum transferred to the surface is
A.
E/c
B.
2E/c
C.
Ec
D.
E/c
2
View Solution
Add Work Space
Answer :
Option B
Explaination / Solution:
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Unit V: Electromagnetic waves
TEST : 1
Unit V: Electromagnetic waves
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TN State Board : TN 12th Standard (Physics)
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Unit I: Electrostatics
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Unit III: Magnetism and magnetic effects of electric current
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Unit IV: Electromagnetic Induction And Alternating Current
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Unit V: Electromagnetic waves
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