If some object is weighed when submerged in water, what will happen to its weight compared to its weight in air ?

examrobotsa's picture

Submitted by examrobotsa on

Q: 59 (NDA-II/2017)
If some object is weighed when submerged in water, what will happen to its weight compared to its weight in air ?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,32,25,15,32,7,3

keywords: 

{'weight': [0, 0, 1, 1], 'decrease': [0, 0, 0, 1], 'water': [65, 15, 80, 129], 'object': [1, 0, 11, 43], 'air': [1, 0, 0, 0], 'increase': [3, 1, 10, 35]}

When an object is submerged in water, its weight will decrease compared to its weight in air. This is because water exerts an upward force, known as buoyant force, on the object. The buoyant force counteracts the force of gravity, making the object feel lighter.

Option 1: Increase- This is incorrect. When an object is submerged in water, the weight actually decreases, as explained above.

Option 2: Decrease- This is the correct answer. When submerged in water, the object`s weight decreases due to the buoyant force exerted by the water.

Option 3: Remain exactly the same- This is incorrect. The weight of an object in water is always less than its weight in air due to the buoyant force.

Option 4: Increase or decrease cannot be predicted- This is incorrect. The decrease in weight is predictable and consistent. When an object is submerged in water, its weight will always decrease compared to its weight in air.

Practice this on app