For harder X-rays,

Which of the following pairs constitute very similar rediations? (i) Hard ultraviolet rays and soft X-rays (ii) Soft ultraviolet rays and hard X-rays (iii) Very hard X-rays and low-frequency gamma -rays (iv) Soft X-rays and gamma -rays

Consider the following statements: 1. X-rays show transverse wave characteristics. 2. X-rays can eject electrons from certain metal surfaces 3. X-rays or 0.1 Å are harder than X-rays of 0.2Å. Which of the statements given above is/are, correct ?

What is the nature of soft X-rays and hard X-rays ?

The bones are harder and stronger than cartilage. Give reason.

Compare X-rays and gamma -rays .

The ratio of speed of gamma-rays and X-rays is :

Treatment of cancer by X-rays or Gamma rays is