Question

The ratio of frequencies of two electromagnetic radiations is 2 : 1. The wave length of first radiation is
X Å and for the second radiation is 2000 Å. Then the value of 'X' is
a) 2000 Å
b) 1000 Å
[ ]
c) 4000 Å
d) 500 Å​

Answer 1

Answer:

Option b.

Explanation:

We know that frequency and wavelength are inversely proportional to each other.

Let wavelength of first radiation and second radiation be 'x¹' and 'x²'

Hence,

f¹/f² = x²/x¹

=> 2/1 = 2000/x¹

=> x¹ = X = 1000Å

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Answer 2

Answer:

answer is 1000 A°

REASON : the frequencies and wave length is inverse to each other So.

2:1 is 1:2 so the answer is 2000: 1000

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