Question

Explain the following. (a) Antacid tablets are prescribed for acidity. (b) Resistance of a wire vary with its length?

Answer 1

Explanation:

• Acidity is caused due to the excess production of acids in the stomach. An antacid tablet contains bases, such as milk of magnesia(magnesium hydroxide, gelusil,etc. These bases react with excess of acids and neutralize the effect of excessive acid and brings relief.
• It is inversely proportional to the area of cross section of the wire. The more the area of cross section of the wire,the less is the resistance and the less the area,the more is the resistance.

Answer 2

Answer:

(a).Antacid is prescribed for acidity because it contains the base Mg(OH)2{Milk of Magnesia} which neutralises the effect of acid and give us relief from the pain and irritation in our stomach.

(b).Resistance of a wire varies with length because Resistance is directly proportional to the square of the length of the wire.