Question

Please give me the explanation with the answer. Thank you

To increase pressure, you must:

a. increase force per unit area

b. decrease area over which force is exerted

c. both a & b

d. none of the above

The middle ear provides an impedance matching function by:

a. amplifying the force per unit area

b. reducing the area over which the existing force is exerted

c. a & b

d. neither of the above

Because the outer ear has no “active elements”:

a. it can serve as an amplifier but not a filter

b. it can serve as both filter and amplifier

c. it can process only passive sounds

d. it can serve as a filter but not an amplifier

Answer 1

To increase Pressure

Pressure= force / unit area

So in option a increased force per unit area. So the unit area is not increasing but the force is increasing

From the formula it is clear that force is directly proportional to Pressure

So. It is correct

According to option b is decrease in area over which force is applied

According to this formula area is inversely proportional to pressure

So when area decrease Pressure increase

So the answer is option c that is both a and b