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MCQ : Gravitation (Floatation) - 2


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10 Questions MCQ Test Science Class 9 | MCQ : Gravitation (Floatation) - 2

MCQ : Gravitation (Floatation) - 2 for Class 9 2022 is part of Science Class 9 preparation. The MCQ : Gravitation (Floatation) - 2 questions and answers have been prepared according to the Class 9 exam syllabus.The MCQ : Gravitation (Floatation) - 2 MCQs are made for Class 9 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for MCQ : Gravitation (Floatation) - 2 below.
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MCQ : Gravitation (Floatation) - 2 - Question 1

A weightless balloon contains 200 g of water. Its weight in water will be

MCQ : Gravitation (Floatation) - 2 - Question 2

School bags have a broader base to reduce

MCQ : Gravitation (Floatation) - 2 - Question 3

When a body floats in a liquid, its apparent weight is always

Detailed Solution for MCQ : Gravitation (Floatation) - 2 - Question 3

Apparent weight is lessened by buoyancy, which occurs when an object is immersed in a fluid (a liquid or a gas). For example, an object immersed in water weighs less, according to a spring balance, than the same object in air. The apparent weight of a floating object is zero.

MCQ : Gravitation (Floatation) - 2 - Question 4

 A mass weighing W can float if the upthrust U is related as

Detailed Solution for MCQ : Gravitation (Floatation) - 2 - Question 4

If the weight of water is greater than the upward buoyant force acting on it, then net force W−U acts downwards. Hence the body displaces downwards, that is, sink.

MCQ : Gravitation (Floatation) - 2 - Question 5

The relative density of a solid is 0.6. It floats in water with

MCQ : Gravitation (Floatation) - 2 - Question 6

The least value of apparent weight of a body in a fluid is

MCQ : Gravitation (Floatation) - 2 - Question 7

The pressure exerted by man on earth is minimum when he

MCQ : Gravitation (Floatation) - 2 - Question 8

An empty closed drum and a filled drum of same dimension will bring

Detailed Solution for MCQ : Gravitation (Floatation) - 2 - Question 8

Correct Answer :- c

Explanation : An empty closed drum and a filled drum of same dimension will bring same upthrust and same volume

MCQ : Gravitation (Floatation) - 2 - Question 9

The relation between force F, pressure P and area A is

MCQ : Gravitation (Floatation) - 2 - Question 10

A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm width in three ways.In which of the following cases, pressure exerted by the brick will be

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