" 7.Explain the advantages and disadvantages of friction."

Explain the advantages and disadvantages of fricition.

Write advantages and disadvantages of friction.

Write advantages and disadvantages of friction

State disadvantages of friction.

What are reflecting type of telescope ? Explain the advantages and disadvantages of reflecting telescopes as compared to refracting telescope and also give the solution.

State two advantages and two disadvantages of friction.

Explain the advantages and disadvantages of semiconducting devices compared to vacuum tube.