Em Waves Question 138
Question: Which of the following is the infrared ray wavelength?
Options:
A) $ {{10}^{-4}},cm $
B) $ {{10}^{-5}},cm $
C) $ {{10}^{-6}},cm $
D) $ {{10}^{-7}},cm $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] The wavelength of infrared region is $ 8\times {{10}^{-5}}cm $ to $ 3\times {{10}^{-3}},cm $ . So maximum wavelength of infrared region $ =8\times {{10}^{-5}},cm\approx {{10}^{-4}},cm $ .
BETA
