Question

pls Can I get an answer to this asap...​

Answer 1

Answer:

Hello buddy !

Here's the properties :

It should have a low work function. A low work function helps to emit electrons from the cathode surface in a comparatively lower temperature.

It should have a high melting point. ...

It should have high mechanical strength.

Answer 2

Answer:

1. It should have a high melting point such that the required emission can be brought up by increasing the temperature.
2. it it should have less work.