List the kinds of waves included in the electromagnetic spectrum from longest to shortest wavelength

Okay.. so let me tell you a trick to remember the names in the ascending order  (shortest to longest) .. you can reverse that to write in descending order right?

so here it is .. the only name you got to remember is "GRUVIMRA"

I used this to remember the orders in my exams . :) hope it helps you too!

G-      Gamma rays
R-      x- Rays
U-     Ultraviolet rays
V-      Visible light
I-       Infrared rays
RA -  Radio waves

in short your answer is the reverse of this list : Radio waves,Infrared rays,Visible light,Ultraviolet rays , X-rays , Gamma rays

Initial velocity,  u = 4.9 m/sfinal velocity = v m/sinitial height,  h₁ =  245 m    final height, h₂ = 0a = -9.8  m/s²time taken = t secondss = ut + 0.5at²⇒  (h₂-h₁) = ut + 0.5at²⇒  0-245 = 4.9t + 0.5×(-9.8)×t²⇒ -245 = 4.9t - 4.9t²⇒ 4.9t² -4.9t -245 =0solving it, we get   t = 7.59sv  = u +  at = 4.9 -9.8×7.59 = 4.9 - 74.38 = -69.48 m/svelocity is  69.48 m/s downward