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1. Question4 points
Arrange the following electromagnetic radiations per quantum in the order of increasing energy: [JEE (Main) 2016]
A : Blue light
B : Yellow light
C : X-ray
D : RadiowaveCorrect
2. Question4 points
Out of the following options which one can be used to produce a propagating electromagnetic wave? [NEET 2016]Correct
3. Question4 points
A red LED emits light at 0.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1 m from the diode is [JEE Main 2015]Correct
4. Question4 points
The electric field of an electromagnetic wave in free space is given by
where t and x are in seconds and metres respectively. It can be inferred that
(a) The wavelength λ is 188.4 m
(b) The wave number k is 0.33 rad/m
(c) The wave amplitude is 10 V/m
(d) The wave is propagating along +x direction
Which one of the following pairs of statements is correct? [CBSE AIPMT 2010]Correct
5. Question4 points
The electric and magnetic field of an electromagnetic wave are [CBSE AIPMT 2007]Correct