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Earth pulls every object towards it with a force called:- a)Friction
- b)Gravity
- c)Tension
- d)Collision
Correct answer is option 'B'. Can you explain this answer?
Earth pulls every object towards it with a force called:
a)
Friction
b)
Gravity
c)
Tension
d)
Collision
|
Nandini Iyer answered |
Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
Gravity is defined as:- a)The push of the earth
- b)The force of the earth
- c)The capacity of the earth
- d)The pull of the earth
Correct answer is option 'D'. Can you explain this answer?
Gravity is defined as:
a)
The push of the earth
b)
The force of the earth
c)
The capacity of the earth
d)
The pull of the earth
|
Preeti Iyer answered |
Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
Classical physics does not include subjects like- a)mechanics
- b)light
- c)heat
- d)elementary particles
Correct answer is option 'D'. Can you explain this answer?
Classical physics does not include subjects like
a)
mechanics
b)
light
c)
heat
d)
elementary particles
|
Anjali Sharma answered |
In classical theory theories of mechanics, relativity, field theory is not included. These are the category of subject which comes under Quantum mechanics(Physics) where we study small particles and classical physics also include electromagnetism (light, heat).
Inverse square law of distance is followed by- a)Gravitational forces
- b)Electromagnetic forces
- c)Both (a) and (b)
- d)Neither (a) and nor (b)
Correct answer is option 'C'. Can you explain this answer?
Inverse square law of distance is followed by
a)
Gravitational forces
b)
Electromagnetic forces
c)
Both (a) and (b)
d)
Neither (a) and nor (b)
|
|
Ajay Yadav answered |
Both gravitational and electromagnetic forces follow inverse square law of distance.
Which of these is incorrect about nuclear forces?- a)They are independent of charge
- b)Nuclear forces are derived from quark-quark interaction
- c)Hadrons do experience strong nuclear force
- d)Nuclear force is not central force
Correct answer is option 'C'. Can you explain this answer?
Which of these is incorrect about nuclear forces?
a)
They are independent of charge
b)
Nuclear forces are derived from quark-quark interaction
c)
Hadrons do experience strong nuclear force
d)
Nuclear force is not central force
|
Geetika Shah answered |
Hadrons are subatomic composite porticle made of two(or) more quarks. They experpance strong nuclear force.
What is the study of the modern theory of the strong forces between quarks?- a)Quantum chromodynamics
- b)Quantum electromagnetism
- c)Quantum electrodynamics
- d)Quantum astronomy
Correct answer is option 'A'. Can you explain this answer?
What is the study of the modern theory of the strong forces between quarks?
a)
Quantum chromodynamics
b)
Quantum electromagnetism
c)
Quantum electrodynamics
d)
Quantum astronomy
|
|
Preeti Iyer answered |
Quantum chromodynamics is as quantum field theory in which strong interaction is described in terms of an interaction between quarks.
Which force is weakest of all fundamental forces?- a)Gravitational force
- b)Electromagnetic force
- c)Weak nuclear force
- d)Strong nuclear force
Correct answer is option 'A'. Can you explain this answer?
Which force is weakest of all fundamental forces?
a)
Gravitational force
b)
Electromagnetic force
c)
Weak nuclear force
d)
Strong nuclear force
|
|
Naina Sharma answered |
Gravitational force is the attraction between two masses.
Electromagnetic force is the force between two charged particles or two poles of a magnet. It is stronger than Gravitational.
Weak nuclear force is the weak force of attraction between the subatomic particles of the nucleus of an atom. Though the name suggests that it is weak, it is stronger than electromagnetic.
Strong nuclear force is the stronger version of nuclear force.It is the strongest force in nature.
Which of the following statements is not correct?- a)Physics is the study of nature and natural phenomena.
- b)Physics and technology are not related to each other.
- c)Electrodynamics deals with electric and magnetic phenomena associated with charged and magnetic bodies.
- d)The physical quantities that remain unchanged in a process are called conserved quantities.
Correct answer is option 'B'. Can you explain this answer?
Which of the following statements is not correct?
a)
Physics is the study of nature and natural phenomena.
b)
Physics and technology are not related to each other.
c)
Electrodynamics deals with electric and magnetic phenomena associated with charged and magnetic bodies.
d)
The physical quantities that remain unchanged in a process are called conserved quantities.
|
Sanjana Sharma answered |
Explanation:
The statement that is not correct is option 'B': Physics and technology are not related to each other. This statement is false because physics and technology are closely related to each other. Here are some points to explain the relationship between physics and technology:
- Physics is the foundation of technology. Many technological advancements are based on the principles of physics. For example, the development of electric motors, computers, and telecommunications devices are all based on the principles of electromagnetism, which is a branch of physics.
- Physics provides the theoretical framework for technological innovations. Scientists and engineers use the laws of physics to design and develop new technologies. For example, physicists use quantum mechanics to design new materials with unique properties, which can be used in various technological applications.
- Technology is used to test and verify many theories of physics. Scientists use technological tools like particle accelerators and telescopes to study the properties of matter and the universe. These tools allow physicists to test their theories and develop new ones.
In conclusion, physics and technology are closely related, and advancements in one field often lead to advancements in the other.
The statement that is not correct is option 'B': Physics and technology are not related to each other. This statement is false because physics and technology are closely related to each other. Here are some points to explain the relationship between physics and technology:
- Physics is the foundation of technology. Many technological advancements are based on the principles of physics. For example, the development of electric motors, computers, and telecommunications devices are all based on the principles of electromagnetism, which is a branch of physics.
- Physics provides the theoretical framework for technological innovations. Scientists and engineers use the laws of physics to design and develop new technologies. For example, physicists use quantum mechanics to design new materials with unique properties, which can be used in various technological applications.
- Technology is used to test and verify many theories of physics. Scientists use technological tools like particle accelerators and telescopes to study the properties of matter and the universe. These tools allow physicists to test their theories and develop new ones.
In conclusion, physics and technology are closely related, and advancements in one field often lead to advancements in the other.
Pick out the correct statements about the strong nuclear force from the following.
S1 : It is charge independent.
S2 : It is the strongest force in nature.
S3 : Its range is very large.
S4 : It is responsible for the stability of nuclei.- a)S1 and S3
- b)S1, S2 and S3
- c)S1, S2 and S4
- d)S2 and S3
Correct answer is option 'C'. Can you explain this answer?
Pick out the correct statements about the strong nuclear force from the following.
S1 : It is charge independent.
S2 : It is the strongest force in nature.
S3 : Its range is very large.
S4 : It is responsible for the stability of nuclei.
S1 : It is charge independent.
S2 : It is the strongest force in nature.
S3 : Its range is very large.
S4 : It is responsible for the stability of nuclei.
a)
S1 and S3
b)
S1, S2 and S3
c)
S1, S2 and S4
d)
S2 and S3
|
Riya Banerjee answered |
The range of strong nuclear force is very small, of about nuclear dimensions (10-15 m).
Which of the following forces is not fundamental force in nature? - a)Gravitational force
- b)Electromagnetic force
- c)Strong nuclear force
- d)Tension
Correct answer is option 'D'. Can you explain this answer?
Which of the following forces is not fundamental force in nature?
a)
Gravitational force
b)
Electromagnetic force
c)
Strong nuclear force
d)
Tension
|
|
Gaurav Kumar answered |
The four fundamental forces in nature are as:
(i) Gravitational force
(ii) Electromagnetic force
(iii) Strong nuclear force
(iv) Weak nuclear force
Among the given forces, tension is not a fundamental force in nature.
(i) Gravitational force
(ii) Electromagnetic force
(iii) Strong nuclear force
(iv) Weak nuclear force
Among the given forces, tension is not a fundamental force in nature.
The range of masses we study in Physics is- a)10-27 kg to 1060kg
- b)10-27 kg to 1055 kg
- c)10-30 kg to 1055 kg
- d)10-30 kg to 1060 kg
Correct answer is option 'C'. Can you explain this answer?
The range of masses we study in Physics is
a)
10-27 kg to 1060kg
b)
10-27 kg to 1055 kg
c)
10-30 kg to 1055 kg
d)
10-30 kg to 1060 kg
|
|
Preeti Iyer answered |
The range of masses goes from 10-30 kg (mass of an electron) to 1055 kg (mass of known observable universe).
The strongest fundamental force in nature is- a)Electromagnetic force
- b)Strong nuclear force
- c)Weak nuclear force
- d)gravitational force
Correct answer is option 'B'. Can you explain this answer?
The strongest fundamental force in nature is
a)
Electromagnetic force
b)
Strong nuclear force
c)
Weak nuclear force
d)
gravitational force
|
|
Nandini Iyer answered |
Force Relative Strength Electromagnetic force 10−3 Strong nuclear force 1 Weak nuclear force 10−13 Gravitational force 10−40Strongest is the strong nuclear force .
Which of the following is not a branch of physics?- a)Mechanics
- b)Optics
- c)Cytogenetics
- d)Electrodynamics
Correct answer is option 'C'. Can you explain this answer?
Which of the following is not a branch of physics?
a)
Mechanics
b)
Optics
c)
Cytogenetics
d)
Electrodynamics
|
|
Preeti Iyer answered |
Among the given branches, cytogenetics is the branch of biology.
Force of friction and tension in a string are- a)Gravitational forces
- b)Electromagnetic forces
- c)Nuclear forces
- d)Weak forces
Correct answer is option 'B'. Can you explain this answer?
Force of friction and tension in a string are
a)
Gravitational forces
b)
Electromagnetic forces
c)
Nuclear forces
d)
Weak forces
|
|
Raghav Bansal answered |
Force of friction and tension in a string are electromagnetic forces.
Which of the following class of forces is different from others?- a)Magnetic force
- b)Electrical force
- c)Gravitational force
- d)Stretching of a spring
Correct answer is option 'D'. Can you explain this answer?
Which of the following class of forces is different from others?
a)
Magnetic force
b)
Electrical force
c)
Gravitational force
d)
Stretching of a spring
|
|
Neha Sharma answered |
Spring force is different from magnetic ,electrical and gravitational force as it varies linearly.
What is the range of the gravitational force?- a)10-2 m
- b)10-15 m
- c)Infinite
- d)10-10 m
Correct answer is option 'C'. Can you explain this answer?
What is the range of the gravitational force?
a)
10-2 m
b)
10-15 m
c)
Infinite
d)
10-10 m
|
|
Priya Menon answered |
The range of the gravitational force is infinite.
Classical physics is applicable to- a)microscopic world
- b)macroscopic world
- c)both microscopic and macroscopic world
- d)cannot say
Correct answer is option 'B'. Can you explain this answer?
Classical physics is applicable to
a)
microscopic world
b)
macroscopic world
c)
both microscopic and macroscopic world
d)
cannot say
|
Suresh Iyer answered |
Classical physics is applicable to macroscopic world.
Gravity is:- a)Down wardly directed force
- b)Upwardly directed force
- c)Leftward directed force
- d)Rightward directed force
Correct answer is option 'A'. Can you explain this answer?
Gravity is:
a)
Down wardly directed force
b)
Upwardly directed force
c)
Leftward directed force
d)
Rightward directed force
|
|
Geetika Shah answered |
Gravity acts from the centre of the earth, therefore it is a down ward acting force.
Earth has no gravitational force:
- a)True
- b)False
- c)The statement is partially correct
- d)None
Correct answer is option 'B'. Can you explain this answer?
Earth has no gravitational force:
a)
True
b)
False
c)
The statement is partially correct
d)
None
|
|
Naina Sharma answered |
Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.
Chapter doubts & questions for Physical World (Old NCERT) - Physics Class 11 2025 is part of NEET exam preparation. The chapters have been prepared according to the NEET exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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