Question

Chapter- Simple machines
1) The longer the rod for the lever, the ________ it is to move the load .
2) Simple machines do work either by changing the ________________ of force or by reducing the ___________________ needed .
3) In a _____________________ pulley , the pulley is attached to a _______________________ or a _____________________ and it doesn't move .

Please help me to solve this fill the blanks.
Class 5 ​

Answer 1

Answer:

when white light is passed through a prism dispersion of light occurs and when another prism is kept inverted the dispersed light which was formed will get back to white light. this is known as recombination of spectrum of light.

Answer 2

Explanation:

the load .

2) Simple machines do work either by changing the ________________ of force or by reducing the ___________________ needed .