Arrange the following electromagnetic radiations per quantum in the order of increasing energy :
i : Blue light
ii : Yellow light
iii : X-ray
iv : Radiowave.
A.
iii, i, ii, iv
B.
ii, i, iv, iii
C.
iv, ii, i, iii
D.
i, ii, iv, iii
Answer :
iv, ii, i, iii
Solution :
Radio wave < yellow light < blue light < X-rays
(Increasing order of energy)
Releted MCQ Question on Electrostatics and Magnetism >> Electromagnetic Waves
Releted Question 1
Out of the following options which one can be used to produce a propagating electromagnetic wave?
The electric field associated with an electromagnetic wave in vacuum is given by $$E = \hat i40\cos \left( {kz - 6 \times {{10}^8}t} \right),$$ where $$E,z$$ and $$t$$ are in $$volt/m,$$ metre and second respectively. The value of wave vector $$k$$ is