Question : For photoelectric effect to take place, the metal used as the cathode should have_________

Option 1: high melting point

Option 2: low melting point

Option 3: low work function

Option 4: low resistance

Question : Supercooling is the cooling of liquid _________.

Option 1: below melting point

Option 2: below freezing point

Option 3: at melting point

Option 4: above melting point

Question : Identify the correct statement

Option 1: The resistance of a wire depends on the length and density of the wire.

Option 2: Specific resistance is the same for all conductors.

Option 3: The resistance of a wire depends on the length and cross-section of the wire.

Option 4: Specific resistance is dependent on the cross-sectional area of the wire.

Question : A galvanometer can be converted into a voltmeter by connecting with it a

Option 1: high resistance in parallel

Option 2: low resistance on parallel

Option 3: high resistance in series

Option 4: low resistance in series

Question : In arc welding, argon is used because of its

Option 1: low reactivity with metal

Option 2: ability to lower the melting point of the metal

Option 3: high flammability

Option 4: high calorific value