Question

Statement I: Intensity of $X$ -rays can be controlled by adjusting the filament current and voltage.
Statement II: The intensity of $X$ -rays does not depend on number of $X$ -ray photons emitted per second from the target.

• A. If both statements are true and statement II is the correct explanation of statement I
• B. If both statements are true but statement II is not the correct explanation of statement I
• C. If statement I is true but statement II is false
• D. If both statements are false

Answer 1

Answer: (C)

Intensity of $X$ -rays $(I)$ is proportional to the filament current and also to the square of the voltage. It is well known that intensity of $X$ -rays depends on the number of photons emitted per second from target.