Answer:
If x-rays get in touch with our body tissues, they create a picture of a metal film. The high energizing rays are unable to penetrate soft tissue, such as skin and organs and travel through the laser. The places where the x-rays pass soft tissues are Black areas of an X-ray.
Thermal energy is converted to chemical energy.
Never are fully correct but b would be most right
A continually rotating magnetic field would continuously induce current, the induced current would show alternating direction