For EM waves (a) ( ) rays have higher penetrating power than (x ) rays (b) (x ) rays have higher penetrating power than ( ) rays (c) Infra red has higher wavelength than x -rays (d) Range of visible light is (4000 Å ) to (7000 Å ) then correct options are

Step-by-step solution

Here's why: (a) y rays have higher penetrating power than X-rays: True, Y-rays generally have higher energy and thus greater penetrating power. (b) X-rays have higher penetrating power than Y rays: False, Y -rays are more penetrating. (c) Infrared has higher wavelength than X-rays: True, infrared radiation has a much longer wavelength compared to X-rays. (d) Range of visible light is (4000 Å ) to (7000 Å ) : True, the visible light spectrum ranges from approximately (4000 Å ) (violet) to (7000 Å ) (red).