বিজ্ঞান Section: Pages 1-116

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Questions and Answers

Which statement accurately differentiates between 'Kinematics' and 'Laws of Motion'?

  • 'Kinematics' studies the causes of motion, specifically forces, while 'Laws of Motion' describes motion geometrically.
  • 'Kinematics' defines motion quantitatively, while 'Laws of Motion' establishes the fundamental relationships between force, mass, and motion. (correct)
  • 'Kinematics' and 'Laws of Motion' are interchangeable; both describe the motion of objects without regard to forces.
  • 'Kinematics' explores why objects move, while 'Laws of Motion' describe the motion itself without considering cause.

How are 'Work, Energy, and Power' related within the framework of physics?

  • Energy is the rate at which work is done, and power is the measure of total work done.
  • Energy is the force required to do work, and power is the displacement caused by applying force.
  • Work is the rate of energy transfer, and power is the capacity to do work.
  • Work represents the energy transferred when a force causes displacement, while power quantifies the rate of this energy transfer. (correct)

Under what conditions would the 'Gravitational Force' between two objects be least affected by changes in the intervening medium?

  • When the objects are immersed in a highly viscous fluid.
  • When the objects are separated by a vacuum. (correct)
  • When the objects are surrounded by a superconducting material.
  • When the objects are separated by a dense plasma.

Which factors significantly complicate the analysis of the 'motion of system of rigid body and particles' compared to that of a single particle?

<p>Additional degrees of freedom and rotational motion. (C)</p> Signup and view all the answers

How do the intermolecular forces in 'Solids and Fluids' influence their response to shear stress?

<p>Solids resist shear stress due to strong intermolecular forces providing rigidity, whereas fluids deform continuously under shear stress due to weaker intermolecular forces. (A), Solids exhibit weak intermolecular forces, allowing them to deform continuously under shear stress, while fluids maintain a fixed shape due to strong intermolecular forces. (B)</p> Signup and view all the answers

If a system undergoes a thermodynamic process where both 'Heat and Thermodynamics' exchanged with the surroundings and internal energy change are precisely measured, what fundamental principle is being directly verified?

<p>The First Law of Thermodynamics regarding energy conservation. (C)</p> Signup and view all the answers

In the context of 'Oscillations and Waves', what key distinction differentiates damped oscillations from forced oscillations?

<p>Damped oscillations lose energy over time, while forced oscillations receive continuous energy input. (C)</p> Signup and view all the answers

In 'Electrostatics', if the net electric flux through a closed Gaussian surface is zero, what can be definitively concluded about the charge distribution?

<p>The net charge inside the surface is zero. (C)</p> Signup and view all the answers

How does 'Physical world and measurement' establish the foundation for quantitative scientific analysis?

<p>By providing standardized units and methods for quantifying observations and testing hypotheses. (C)</p> Signup and view all the answers

Which of the following is true about frames of reference?

<p>The laws of physics may not be the same for all observers. (C)</p> Signup and view all the answers

Flashcards

What is kinematics?

Study of motion without considering the cause.

What is भौतिक जगत एवं मापन (Physical World and Measurement)?

The physical world and its measurement, dealing with matter, energy, and their interactions.

What is गति के नियम (Laws of Motion)?

Deals with the laws governing motion.

What is कार्य, ऊर्जा और शक्ति (Work, Energy and Power)?

Work, energy, and power are fundamental concepts in physics.

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What is गुरुत्वाकर्षण (Gravitation)?

The force that attracts any objects with mass.

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What is ऊष्मा तथा ऊष्मागतिकी (Heat and Thermodynamics)?

Deals with heat and thermodynamics.

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What is दोलन तथा तरंगें (Oscillations and Waves)?

Study of oscillations and waves.

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Study Notes

  • The "বিজ্ঞান" section covers pages 1-116.

भौतिक जगत एवं मापन (Physical World and Measurement)

  • This is covered on pages 3-4.

गतिकी (Kinematics)

  • This is covered on pages 5-8.

गति के नियम (Laws of Motion)

  • This is covered on pages 9-12.

कार्य, ऊर्जा और शक्ति (Work, Energy and Power)

  • This is covered on pages 13-15.

गुरुत्वाकर्षण (Gravitation)

  • This is covered on pages 16-19.

दृढ़ पिण्ड व कणों के निकाय की गति (Motion of System of Rigid Body and Particles)

  • This is covered on pages 20-24.

ठोस एवं द्रव (Solid and Liquid)

  • This is covered on pages 24-29.

ऊष्मा तथा ऊष्मागतिकी (Heat and Thermodynamics)

  • This is covered on pages 29-32.

दोलन तथा तरंगें (Oscillations and Waves)

  • This is covered on pages 33-36.

स्थिर वैद्युतिकी (Static Electricity)

  • This is covered on pages 37-41.

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