KVS PGT Physics Mock Test - 7 - KVS PGT/TGT/PRT MCQ

दिए गए विकल्पों में सही उत्तर विकल्प 4 ‘पूर्वकालिक क्रिया’ होगा। अन्य विकल्प इसके असंगत उत्तर हैं। Key Points

• इसका सही उत्तर ‘पूर्वकालिक क्रिया’ है।
• मुख्य क्रिया से पहले होने वाली क्रिया को पूर्वकालिक क्रिया कहते हैं। जैसे - पंकज पढ़कर सो गया।
• आप देख सकते हैं कि उपरोक्त वाक्य में दो क्रियाएँ एक साथ प्रयुक्त हुई हैं, जिसमें एक क्रिया दूसरी क्रिया से पहले खत्म हुई है।
• वाक्य के अनुसार राजू द्वारा पहले पढ़ने का कार्य पूर्ण किया गया है और उसके बाद वह सो गया।
• अतः इस वाक्य में पढ़कर पूर्वकालिक क्रिया होगी और यह वाक्य पूर्वकालिक क्रिया का उदाहरण होगा।

अन्य विकल्प:

Additional Information

क्रिया- जहां किसी कार्य के करने या होने का बोध हो, क्रिया कहलाता है। जैसे- मोहन जाता है।, वह खाना खाता है। आदि।

रचना की दृष्टि से क्रिया के दो भेद होते हैं-

दिए गए विकल्पों में सही उत्तर विकल्प 4 है। अन्य विकल्प इसके सही उत्तर नहीं हैं।

Key Points

• 'लजाना' अकर्मक क्रिया है।
• जब कर्म का अभाव होता है तो क्रिया का फल कर्ता पर पड़ता है। जब वाक्य में कोई कर्म नहीं होता तो क्रिया अकर्मक होती है।
• जैसे- पक्षी उड़ता है।

अन्य विकल्प:

Mistake Points

• जो क्रिया संज्ञा, सर्वनाम व विशेषण से बनती है उसे नामधातु क्रिया कहते है।
• यौगिक क्रियाएं वे होती हैं जिनमे दो क्रियाओं का योग होता है। जैसे: खाना-पीना, उठना-बैठना, हंसना-गाना, आदि।
• यहाँ लजाना क्रिया अकर्मक क्रिया होगी क्योकि इसके साथ कर्म की आवश्यकता नहीं है।

Additional Information

क्रिया- जहां किसी कार्य के करने या होने का बोध हो, क्रिया कहलाता है। जैसे- मोहन जाता है।, वह खाना खाता है। आदि।

रचना की दृष्टि से क्रिया के दो भेद होते हैं-

दिए गए विकल्पों में से विकल्प 3 "कोई नौकर" सही है। अन्य विकल्प सही नहीं हैं।

Key Points

• ऐसे सर्वनाम शब्द जो संज्ञा से पहले प्रयोग होकर उस संज्ञा शब्द की विशेषता बतलाते है, उन शब्दों को सार्वनामिक विशेषण कहते हैं।
  • जैसे:- कोई नौकर यहाँ से नहीं जाएगा।
• इस वाक्य से यह साफ हो जाता है कि कोई नौकर वाक्य सार्वनामिक विशेषण है।

Additional Information

International Yoga Day is celebrated on 21^st June every year.

Similarly;

Kargil Victory day is commemorated on 26^th July every year.

Hence, "Kargil Victory Day : 26^th July" is the correct answer.

Important Points

The pattern followed is, 

Logic: For all the other option sum of place value is 14 except “DJA”

Hence, “DJA” is the correct answer.

The Latin meaning of the term 'curriculum' is a racecourse used by chariots. Hence, it is any path or course of study to be undertaken by an educational institution, to be covered in a specified timeframe. The course of events can take place inside the school and also outside it.

Key PointsTeacher-centered curriculum-

• The teacher is the center of the teacher-centered curriculum. The focus of this kind of curriculum is the teacher.
• It emphasizes the importance of the teacher's input in the creation of the curriculum and leaves no space for the personal interest of students.
• The development of the learner is significantly influenced by the teacher. The teacher decides on instructional methods, teaching materials, the usage of audio-visual aids, and other things.
• Students in a teacher-centered curriculum, concentrate solely on the teacher. Students only listen to the teacher when they speak.
• In this curriculum, teacher focuses on developing essential knowledge in various subject areas, teamwork is discouraged, and memorization is encouraged.

Hence, we conclude that the teacher based curriculum least focus upon learners where teachers put all their focus on, children talk and the teacher exclusively listen.

National Curriculum Framework, 2005, published by NCERT, is quite significant for bringing contemporary changes in school and teacher education curricula. Keeping in view the changing perspectives and contexts of school education across the globe, necessary curricular changes have been recommended in NCF, 2005.

Key Points

• The major features of NCF, 2005 have been articulated in five different areas of the School Curriculum, they are
  • Perspectives of Education
  • Learning and Knowledge
  • Curricular Areas, School Stages, and Assessment
  • School and Classroom Environment
  • Systemic Reforms
• Perspectives of Education-
  • To integrate examination into classroom learning and also to make it more informal, alternative, and flexible.
• Learning and Knowledge-
  • To focus on the holistic development of the students to enhance their physical and mental development.
  • To create an inclusive environment in the schools and classrooms for all students.

Thus from the above-mentioned points, it is clear that the perspective of knowledge and classroom environment is one of the major features of NCF, 2005.

ICT is a broad term, which comprises information technology and communication technology. Information technology includes radio, television, computer and Internet, teleconferencing, and mobile.

• All these information technologies are powered by mainly two types of communication technologies.
• These are satellite-based communication and terrestrial-based communication. 
• Satellite-based communication is the communication, which takes place between sender and receiver through a communication satellite.
• Terrestrial-based communication is the communication, which takes place through a network of transmitters spread across a geographical area, a country, or a state.

Key Points 
ICT: Communicating information effectively by making use of appropriate technology is called information and communication technology (ICT).

• ICTs are defined, as a “diverse set of technological tools and resources used to communicate, and to create, disseminate, store, and manage information.”
• These technologies include computers, the Internet, broadcasting technologies (radio and television), telephony, etc.
• Educational technology is concerned with using electronic gadgets such as television, radio, language labs, and various other projected media in the teaching-learning process.
• Teachers can use numerous ICT technologies to make teaching-learning more successful, hence embracing blended teaching-learning.
• The availability of the internet allows for virtual learning and is the main tool used in online learning.

Thus, it can be inferred that Textbook learning is not commonly used in ICT mode.

Diversity in literary terms means differences. The term diversity, when used in discourse related to people or communities or in social contexts is more specific, indicates that a group of people is made up of individuals who are different from each other in some way or the other or it means collective differences among people, that is, those differences which mark off one group of people from another.

• For example, differences in culture, language, gender, appearance (e.g. skin color, hair type) lifestyle, social and economic status, family structure, abilities, (e.g. physical, social, creative, and intellectual), values, and beliefs.

Key Points 

• Social inclusion refers to a process by which efforts are made to ensure equal opportunities for all, regardless of their background, be it money, class, ethnicity, gender, race, or whatever the index of diversity be, to enable full and active participation in all aspects of life, including civic, social, economic, and political activities, as well as participation in decision-making processes.
• Social inclusion can be approached as a goal, an objective, and a process. Its process affects almost all societal activities, and should therefore be approached from various dimensions.
• If a society is inclusive it means that it understands, accepts, and respects diversity, it not only recognizes diversity but also embodies it so that each member of the diverse society can achieve their full potential in life.

Thus, it is concluded that Social inclusion is a process by which efforts are made to ensure equal opportunities for all, regardless of their background.

Hint

• ​Social exclusion or social marginalization is a term used across disciplines including education, sociology, psychology, politics, and economics. Because of social exclusion, the affected individuals or communities are prevented from participating fully in the economic, social, and political life of the society in which they live.

Development refers to an increase in structure for better and enhanced functioning of organs.

• Development is a continuous process from the womb to the tomb and continues gradually until reaching its maximum growth.
• The rate of development is not uniform and everyone has their own particular rate of development. It is a wide and complex process, thus there are some principles that need to be followed for a better understanding of the concept.

Key Points

Characteristic/Principles of development include:

• Development is cumulative.
• Development is Specific and predictable.
• Development is the process of interaction.
• Development follows uniformity of pattern.
• Development proceeds from general to specific.
• Development rate varies from person to person.
• Development is directional, predictable and sequential.

Hence, it could be concluded that Development is uncontrolled and independent is not a characteristic of development as development is dependent on a few factors such as maturation, learning, etc.

Torque acting on a dipole is p*E*sinθ where E is the electric field. Now θ is 0 degree, so sinθ becomes 0 and hence no torque acts on the dipole. So in this case, no force or torque acts on the dipole. Therefore it will be the condition of stable equilibrium. In the case of θ=180 degree, sinθ is also 0 but the condition is known as unstable equilibrium i.e. if we rotate the dipole a bit, it will not come back to its initial position.

σ=Stress and ε=strain
σ=F/A= (550kg) × (9.81m/s²)3×10-5m²/=0.18GPA
ε=Δl/l0=σ/Υ​=0.18×10⁹/200×109​=9×10^-4
Δl=εl₀= (9×10^-4) (2m) = 0.0018m=1.8mm

Fundamental quantities are those which cannot be defined in terms of other quantities.

• Length and time are independent and can be considered fundamental.
• Velocity depends on both length and time, so it cannot be fundamental.
• Thus, length, time, and mass are suitable as fundamental quantities.

Velocity cannot be a fundamental quantity because it is derived from length and time.

Stress is the force per unit area experienced by the body and strength is the ability to withstand the stress. When stress becomes greater than strength, accidents happen.

Moment of inertia about its centroidal axis has a minimum value as the centroidal axis has mass evenly distributed around it thereby providing minimum resistance to rotation as compared to any other axis. Also the statement-2 is correct but is not the correct explanation for statement-1.

5 km is the distance covered in 5 mins, which means 1 km is the distance covered in 1 min
Hence, it will travel 60 km in 60 mins, i.e. speed = 60 km/hr

Newton's law of cooling states that the heat released by a body with respect to time (or) the rate of heat released is directly proportional to the difference between the body's temperature and the surrounding temperature. 
dH/dt = k(T – Ts) where t = surrounding's temperature and T = temperature of the body 
Consider two bodies A and B, of equal surface areas, such that A's temperature is more that B's temperature and the surrounding temperature is less than both A and B. Then according to Newton's law of cooling A loses more heat to the surroundings when compared B during the same time interval. So, A will cool faster than B.

Applying the 2nd law of motion,
Equating all forces on the string carrying the 2 blocks we get T = 5g/3
The tension in spring balance = 2T
So, the reading is the mass = T/g = 10/3 Kg < 6Kg

Explanation:A will become positive with respect to B because current  indused is in clockwise direction

We know that magnitude of bulk modulus
K=[P/(dV/V)]
Now, percentage change in volume is. 10^-3 %
Therefore, (dV/V)x100=10^-3
So, dV/V=10^-5
Hence, k is,
K=40atm/10^-5=40x1.01x10⁵ /10^-5 =4.04x10¹¹ N/m² 

We can generalise it by assuming a positive charge moving away from another positive charge. now both of them are repelling each other with some force. so that positive charge will accelerate which results in the increase in K.E.

Let net electric is zero at point P at a distance r from the 2mc charge.
Electric field at point P due to charge 2mc i sin direction of 8mc and its value is

Electric field at point P due to charge 8mc isin direction of 2mc and its value is

for net field to be zero

taking root on both sides

The direction of these circular magnetic lines is dependent upon the direction of current. The density of the induced magnetic field is directly proportional to the magnitude of the current. Direction of the circular magnetic field lines can be given by Maxwell's right hand grip rule or Right handed cork screw rule.

When the angle of incidence in water reaches a certain critical value, the refracted ray lies along the boundary, having an angle of refraction of 90-degrees.For any angle of incidence greater than the critical angle, light will undergo total internal reflection.

Answer :- a,c

Solution :- At θ=45∘,mgsinθ=1×cosθ

At θ>45∘,mgsinθ=1×cosθ (friction acts upward)

At θ<45∘,mgsinθ=1×cosθ (Friction acts downward)

xa=gsinθ−μgcosθ

The kinetic energy (K.E.) of photoelectrons is calculated using the energy of the incident radiation, given by the formula:

• Incident Energy (E): E = hc/λ
• Where h = Planck's constant, c = speed of light, λ = wavelength
• For energy in electron volts (eV) and wavelength in Angstroms (Å), the formula simplifies to: E = 12400/λ Å

Given:

• Wavelength, λ = 1000 Å
• E = 12400 / 1000 Å
• Therefore, E = 12.4 eV

Since the work function is negligible, the K.E. of the photoelectrons is approximately the same as the incident energy: 12.4 eV.

Due to verifying electric field, it experiences an verifying force :-
F=QE=QE_0​sinωt
at maximum amplitude A, it experience a maximum force of:-
F_max​=QE_0​
also, Restoring force in SHM is given by: - F=mω²x
for amplitude, x=A OR,
mω²A=QE_0​
⇒A= QE₀/mω²