Which one among the following is the primary reason for asking persons undergoing X-ray imaging to remove metallic objects?

Which one of the following is not a property of the X-rays?

Which one of the following statements about X-rays is not true ?

Remote Sensing uses which of the following in its applications?

Which one of the following wavelengths corresponds to the wavelength of X-rays?

Which of the following electromagnetic radiations has the maximum energy per photon?