Science practise

The electric lamp converts electric energy into ................. energy

• Sound

• Light

• Magnetic

• kinetic

Select the gases that exist in the fluorescent lamp

• Neon

• Mercury Vapor

• Water Vapor

• Argon gas

The inner surface of the tube of the fluorescent lamp is covered with

• mercury

• tungsten

• a phosphoric material

• copper

The filament of the light bulb is made of aluminum

• True

• False

The .............. connects the light bulb with the electric circuit

• Base of the light bulb

• The filament

• glass bulb

• copper and lead wires

the common gas between the light bulb and the fluorescent lamp is

(a)  

Draw a light bulb and point to the piece of lead

All of the following are from the usages of the fluorescent lamp except

• lighting houses

• decorating commercial stores

• commeercial advertisements

• Making torches

The coiled wire in the electric lamp is made of ...............

• iron

• tungsten

• copper

• aluminium

Which of the following levers doesn't save effort

• coal holder

• nutcracker

• wheelbarrow

• bottle opener