1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
The ratio of contributions made by the electric field and magnetic field components to the intensity of and electromagnetic wave is : (c = speed of electromagnetic waves)
A
1 : 1
B
1 : c
C
1 : c2
D
c : 1
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Which colour of the light has the longest wavelength?
A
blue
B
violet
C
red
D
green
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
An EM wave is propagating in a medium with a velocity $$\overrightarrow v = v\widehat i$$. 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
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
In an electromagnetic wave in free space that 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 $$ \times $$ 10$$-$$8 T
B
0.70 $$ \times $$ 10$$-$$8 T
C
4.23 $$ \times $$ 10$$-$$8 T
D
1.41 $$ \times $$ 10$$-$$8 T
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