Radiation produced from TV picture tube is_____________?
Radiation produced from TV picture tube is_____________?
		A. B-rays
B. X-rays
C. Far infrared
D. Infrared
		A. B-rays
B. X-rays
C. Far infrared
D. Infrared
		A. 76cm 0°C
B. 760mm 273K
C. 1atm 273K
D. all of the above
		A. material objects only
B. material objects and electromagnetic radiation only
C. electromagnetic radiations
D. none of the above
		A. 120 to 80 torr
B. 100 to 80 torr
C. 120 to 60 torr
D. 60 to 140 torr
		A. 10-10s
B. 10-8s
C. 10-6s
D. 10-9s