Q.

Arrange the following in the ascending order of wavelength:

A. Gamma rays (λ1)

B. x-rays (λ2)

C. Infrared waves (λ3)

D. Microwaves (λ4)

Choose the most appropriate answer from the options given below         [2024]

1 λ4<λ3<λ1<λ2  
2 λ2<λ1<λ4<λ3  
3 λ4<λ3<λ2<λ1  
4 λ1<λ2<λ3<λ4  

Ans.

(4)      

           Order of wavelength

           gamma rays < x-rays < infrared < microwaves

          λ1<λ2<λ3<λ4