# NEET Questions Solved

NEET - 2015

The energy of the EM wave is of the order of 15 KeV. To which part of the spectrum does it belong?

(a)X-rays

(b)Infrared rays

(c)Ultraviolet rays

(d)$\gamma$-rays

Concept Videos :-

#7 | What is EM Wave?
#8 | Transverse Nature of EM Wave
#9 | Properties (1 to 9) of EM Wave
#10 | Properties (10, 11, 12) of EM Wave
#11 | Spectrum of EM Waves
#12 | Solved Examples (1 to 5)
#13 | Solved Examples (6 to 9)

Concept Questions :-

Properties of EM waves

Given energy of EM waves is of the order of 15keV
i.e. E=hv=h x $\frac{c}{\lambda }$

=>λ=

=6.624x10-34 x 3x1018/15 x 10x 1.6x10-19

=1.3248 x 10-29/1.6x10-19

=0.828x10-10m

=0.828Å [∴1Å=10-10m]

λ=0.828Å

Thus, this spectrum is a part of X-rays.

Difficulty Level:

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