ESS-UNIT-2

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#1. What is the branch of physics that deals with the study of motion and its causes?

#2. Which physicist formulated the laws of motion and universal gravitation?

#3. In which of the following units is electric charge measured?

#4. What is the SI unit of force?

#5. What is the fundamental particle that carries a positive electric charge?

#6. What is the primary goal of physics?

#7. In which of the following scenarios would classical physics be most applicable?

#8. What does the study of astrophysics primarily focus on?

#9. What does thermodynamics study?

#10. Which theory explains the relationship between space and time?

#11. The SI unit of length is:

#12. What is the SI unit of temperature?

#13. The symbol 'kg' represents the unit for:

#14. Which of the following is a derived unit?

#15. What is the SI unit for electric current?

#16. The prefix 'kilo-' in the metric system represents:

#17. What is the SI unit for luminous intensity?

#18. According to Newton's First Law of Motion, an object will remain at rest unless:

#19. Newton's Second Law relates force, mass, and acceleration. The formula representing this law is:

#20. In Newton's Third Law, when you sit in a chair, your weight is the action force. What is the reaction force?

#21. If you double the force applied to an object of constant mass, what happens to its acceleration?

#22. Which of Newton's laws explains why a rocket moves forward as exhaust gases are expelled backward?

#23. In circular motion, the force directed toward the center of the circle is called:

#24. The gravitational force between two objects depends on:

#25. If an object is in equilibrium, the net force acting on it is:

#26. According to Newton's Law of Universal Gravitation, the force between two masses is directly proportional to the:

#27. When a net external force is applied to an object, what happens to its momentum?

#28. Which of Newton's laws is often summarized as "For every action, there is an equal and opposite reaction"?

#29. Special Relativity was introduced by:

#30. Accrding to Special Relativity, as an object with mass approaches the speed of light, its relativistic mass:

#31. The equation E=mc2 relates:

#32. In Special Relativity, time dilation occurs when:

#33. The Lorentz contraction refers to the:

#34. The speed of light-c is approximately:

#35. According to Special Relativity, mass and energy are interchangeable, as expressed by:

#36. As an object with mass approaches the speed of light, its momentum:

#37. In relativistic mechanics, what happens to an object's length as its velocity approaches the speed of light?

#38. The Zeroth Law of Thermodynamics is concerned with:

#39. The First Law of Thermodynamics is a statement of:

#40. Which of the following statements best describes the Second Law of Thermodynamics?

#41. Entropy is a measure of:

#42. The process of heat transfer through direct contact of particles without any movement of the particles themselves is called:

#43. According to the Third Law of Thermodynamics, the entropy of a perfect crystal at absolute zero is:

#44. What is the standard unit for entropy?

#45. The term "adiabatic" refers to a process in which:

#46. The Clausius statement of the Second Law of Thermodynamics is related to:

#47. The heat engine with the highest theoretical efficiency is the:

#48. According to the Zeroth Law of Thermodynamics, if system A is in thermal equilibrium with system B, and system B is in thermal equilibrium with system C, then:

#49. What type of wave is an acoustic wave?

#50. Which property of a sound wave is related to its pitch?

#51. What is the unit of measurement for sound intensity?

#52. Which electromagnetic wave has the shortest wavelength?

#53. Which of the following is a characteristic shared by all electromagnetic waves?

#54. What type of wave is an acoustic wave?

#55. In which medium do acoustic waves travel the fastest?

#56. What is the speed of sound in air at room temperature (approximately)?

#57. What property of a sound wave is related to its perceived pitch?

#58. What is the phenomenon where the frequency of a sound wave changes due to the motion of the source or observer?

#59. What is the term for the bouncing back of sound waves off a surface?

#60. Which of the following materials is a good conductor of sound waves?

#61. Which of the following is not a type of electromagnetic wave?

#62. What is the relationship between the frequency and wavelength of an electromagnetic wave?

#63. Which part of the electromagnetic spectrum has the longest wavelength?

#64. What is the unit of frequency for electromagnetic waves?

#65. Which color of visible light has the shortest wavelength?

#66. In which medium do electromagnetic waves travel fastest?

#67. Which of the following is a common use of infrared waves?

#68. What phenomenon occurs when electromagnetic waves change direction as they pass through a medium with a different refractive index?

#69. What is the SI unit of electric field strength?

#70. Electric field lines always point in the direction of:

#71. What is the electric field at a point in space?

#72. How is the direction of the electric field defined?

#73. The SI unit of electric field is:

#74. If a positive charge is placed in an electric field, in which direction will it experience a force?

#75. How does the electric field strength between two charged plates change if the distance between the plates is increased?

#76. Which of the following materials is a good conductor of electricity?

#77. What is the SI unit of magnetic field strength?

#78. What is the SI unit of magnetic flux?

#79. According to Ampere's Law, the magnetic field around a closed loop is proportional to:

#80. What is the magnetic pole that acts as the north-seeking pole of a magnet?

#81. Which material is typically used as a core in electromagnets to enhance their magnetic field strength?

#82. The phenomenon of a temporary increase in the magnetic strength of a material when placed in a magnetic field is called:

#83. What happens to the magnetic field strength as you move away from a permanent magnet?

#84. In which of the following materials is the permeability the highest, making it an excellent magnetic shield?

#85. According to Faraday's Law of Electromagnetic Induction, the induced electromotive force (EMF) is proportional to:

#86. The phenomenon of a changing magnetic field inducing an electric current is described by:

#87. The speed of electromagnetic waves (such as light) is determined by:

#88. In electromagnetic waves, the electric field and magnetic field are:

#89. What is the charge of a proton?

#90. Which subatomic particle is responsible for the majority of an atomic number?

#91. What is the charge of an electron?

#92. What is the charge of a neutron?

#93. Which scientist is credited with the discovery of the neutron?

#94. Which scientist is credited with the discovery of the electron?

#95. Which scientist is credited with the discovery of the proton?

#96. What is the atomic number of an element?

#97. The mass number of an atom is the sum of:

#98. What is the unit of radioactivity?

#99. Which type of nuclear decay involves the emission of an alpha particle?

#100. The process of combining two light nuclei to form a heavier nucleus is known as:

#101. Who proposed the concept of wave-particle duality?

#102. Which physicist formulated the uncertainty principle?

#103. According to wave-particle duality, particles like electrons exhibit both wave-like and particle-like properties. What experiment provided evidence for this phenomenon?

#104. The uncertainty principle states that it is impossible to simultaneously know the precise values of a particle's:

#105. According to the uncertainty principle, the product of the uncertainties in position (Δx) and momentum (Δp) of a particle is equal to or greater than:

#106. Which mathematical expression represents the uncertainty principle?

#107. The uncertainty principle implies that as the uncertainty in position decreases, the uncertainty in momentum:

#108. Which physical quantity is denoted by h in the uncertainty principle?

#109. According to the Big Bang theory, the universe originated from a:

#110. Dark matter, which does not emit, absorb, or reflect light, is believed to constitute a significant portion of the total mass in the universe. What is its role in the cosmos?

#111. What cosmic phenomenon occurs when a massive star exhausts its nuclear fuel and collapses under its own gravity?

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