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9th Class Physics Chapter 4 Online Preparation
9th Class English Medium Subjects
9th Class Urdu Medium Subjects
Online Short Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "
Try The Short Questions For 9th Class Physics English Medium Chapter 4 Preparation
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Total Questions10
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Available Sets12
Physics (New Book) - 9th Class Physics English Medium Chapter 4 Preparation
Question # 1
On doubling the moment arm, what will be its effect on the value of torque
- Ans 1: On doubling the moment arm the value of torque will also be double
Prepare Complete Set Wise Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "
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Set 1
10 Questions
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Set 2
10 Questions
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Set 3
10 Questions
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Set 4
10 Questions
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Set 5
10 Questions
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Set 6
10 Questions
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Set 7
10 Questions
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Set 8
10 Questions
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Set 9
10 Questions
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Set 10
10 Questions
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Set 11
10 Questions
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Set 12
10 Questions
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9th Class Physics English Medium Chapter 4 Preparation - Set 1
Question # 1
On doubling the moment arm, what will be its effect on the value of torque
- Ans 1: On doubling the moment arm the value of torque will also be double
9th Class Physics English Medium Chapter 4 Preparation - Set 2
Question # 1
Define Resultant vector?
- Ans 1: A resultant vector is a single force that has the same effect as the combined effect of all the forces to be added.
9th Class Physics English Medium Chapter 4 Preparation - Set 3
Question # 1
Define trigonometry
- Ans 1: The branch of geometry which explains the properties of right angle triangle is called trigonometry.
9th Class Physics English Medium Chapter 4 Preparation - Set 4
Question # 1
What is hypotenuse
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Ans 1: The facing the angle of 90 is called hypotenuse e.g the side AC in the figure is hypotenuseIn right angle triangle the side opposite to right angle is called hypotenuse
9th Class Physics English Medium Chapter 4 Preparation - Set 5
Question # 1
A force of 150 N is making an angle of 40 with horizontal surface what is its vertical components.
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Ans 1: Given data: Give data F= 15N0=40
- Ans 2: Required Fy
9th Class Physics English Medium Chapter 4 Preparation - Set 6
Question # 1
What is state of neutral equilibrium
- Ans 1: Neutral Equilibrium: If a body remains in its new position when disturbed from its previous position then body is said to be in neutral equilibrium
- Ans 2: Note In neutral equilibrium centre of gravity of body keeps its height.
9th Class Physics English Medium Chapter 4 Preparation - Set 7
Question # 1
Does the speed of a ceiling fan go on increasing all the time.
- Ans 1: No, speed of a ceiling fan is not increasing all the time but it is constant.
9th Class Physics English Medium Chapter 4 Preparation - Set 8
Question # 1
Two children are sitting on the sea-saw such that they cannot swing
- Ans 1: In this situation the net torque is zero
9th Class Physics English Medium Chapter 4 Preparation - Set 9
Question # 1
What is centre of gravity
- Ans 1: Centre of Gravity: A point where whole weight of the body appears to act vertically downward is called centre of gravity of a body e.g centre of gravity of uniform rod is centre of the rod
9th Class Physics English Medium Chapter 4 Preparation - Set 10
Question # 1
Difference between like and unlike forces?
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Ans 1: Like forces:
like forces are the forces that are parallel to each other and have the same direction -
Ans 2: Unlike forces:Unlike forces are the forces that are
parallel but have direction opposite to each other.
9th Class Physics English Medium Chapter 4 Preparation - Set 11
Question # 1
What is difference between stable and unstable
- Ans 1: Stable: equilibrium: A body is said to be in stable equilibrium if after a slight tilt it return to its previous position.
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Ans 2: Example: A book on a table is example A book on a table is example of stable equilibriumUnstable equilibrium: If a body does not return to its previous position when sets free after a slightest till is said to be in unstable equilibrium
- Ans 3: Example: A pencil in a vertical position on its lip. When ever you leav it the pencil topples over about its tip and fall down
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Ans 4: Neutral equilibrium: If a body remains in its new position when disturbed from its previous position it is said to be in a state of neutral equilibriumExample: In neutral equilibrium the centre of gravity of the body remains at the same height irrespective to its new position.
9th Class Physics English Medium Chapter 4 Preparation - Set 12
Question # 1
What is meant by principle of moments?
- Ans 1: A body is balanced if the sum of clockwise moments acting on the body is equal to the sum of anticlockwise moments acting on its.
9th class Physics Chapter 4 (English Medium)
Here you can prepare 9th Physics Chapter 4 online Short Questions Preparation (Turning Effect of Forces). Click the button for 100% free full Preparation.
