1) The lumen output of a 230 volts, 100 watts gas-filled lamp is approximately :

700

1000

1200

1500

Answer is:

1200

Explanation:

the radiation from the discharge excites a fluorescent material

the radiation is produced directly by the discharge

the radiation is produced by the argon gas

very high voltage is needed to start the discharge

Answer is:

high starting voltage

high current density

low current density

low starting voltage

Answer is:

greater illumination occurs

less illumination occurs

only one colour can be obtained

more shadow occur, but there is less eye strain

Answer is:

will become OFF

will continue to glow

filaments will be damaged

will glow intermittently

Answer is: