Assertion (A) : A hydraulic jack is used for squeezing oil out of linseed and cotton seeds.

Reason (R) : It works on the Pascal's principle.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

both A and R are true and R is the correct explanation of A

Explanation

Assertion (A) is true because hydraulic jacks are commonly used in oil extraction processes to apply large pressure over a small area to squeeze oil from seeds.

​Reason (R) is true because Pascal's principle states that :

“When pressure is applied to a confined fluid, it is transmitted equally in all directions throughout the fluid.”

This principle allows a small force applied on a small piston to produce a large force on a larger piston, making the jack effective for pressing operations like oil extraction, since the hydraulic jack works because of Pascal’s principle, the Reason correctly explains the Assertion.