Which of the following rays are not electromagnetic wave?
(A) `x-` rays
(B) `gamma` - rays
(C) `Heat rays `
(D) `beta-` rays

Which of the following is/are not true for x- rays?

Which of the following are not electromagnetic waves? (i) alpha -rays (ii) Radio waves (iii) beta -rays (iv) Sound waves (v) Micro waves (vi) Cosmic rays

Which of the following has the shortest wavelength ? A) Cosmic rays B) γ rays C) Microwave rays

Which of the following has shortest wavelength, microwave, ultraviolet wave and X-rays?

X-rays are

Which of the following radiations is most easily stopped by air? a. alpha -rays b. gamma -rays c. beta -rays d.X-rays

Which of the following is positively charged? (1.) α -particle (2.) β -particle (3.) γ -rays (4.) X -rays

‘SONAR’ emits which of the following waves Radio waves Micro waves Ultrasonic waves Gamma rays

Which one of the following statement is WRONG in the context of X- rays generated from X- rays tube ?

Which one of the following statement is WRONG in the context of X- rays generated from X- rays tube ?