Bihar STET Paper 2 Physics Mock Test - 8 - Bihar PGT/TGT/PRT MCQ

Potential energy at surface of earth will be PE₁ = (G.M.m)/R

Now, potential energy at height nR from the surface of earth,

PE₂ = (G.M.m)/(R+nR)

Here, change in PE = PE₁ – PE₂

= (G.M.m)/R – (G.M.m)/(n+1)R

= (G.M.m)/R[1 – 1/(n+1)]

= (G.M.m)/R[(n + 1 – 1)/(n+1)]

= [n/(n+1)](G.M.m)/R ….(i)

Also, g = GM/(R^2) ….(ii)

From (i) and (ii),

Change in PE = (n/(n+1))mgR

We know that PV=nRT also PM=dRT
So in the equation The value of R depends on P , V , n , T , d , M
except atomicity 
 so the ans is A

Angular momentum is conserved.
I1w1 = I2w2
I2 = (2/5)I1
I1(40) = (2/5)I1w2
w2 = 100 rpm

Since the charges are unlike, the force will be attractive. Thus the force directs from 1C to -4C.

The rod is moving towards the right in a field directed into the page.
Now, if we apply Fleming's right hand rule, then the direction of induced current will be from end X to end Y.
But, according to Lenz's law the emf induced in the rod will be such that it opposes the motion of the rod.
Hence, the actual emf induced will be from end Y to end X. So, the current will also flow from end Y to end X.
Now, using the convention of current end Y should be positive and end X should be negative.
So, correct answer is option b

For var ious combination s equivalent r esistan ce is maximum between P and Q.

T = ma,  F = 2T  

Magnification in microscope is  m=− lD/f₀​​f_e
where, l is length of tube and D is least distance for clear vision
f_0​ is focal length of objective
fe​ is the focal length of the eyepiece.
So, as l increases m increases.
Hence, the magnifying power of a microscope increases with increase in tube length.
 

Side AP =  = 0.5m Electric Field due to charge at A on point P = Elecric Field due to charge at B on 

point P 

Where So force due to this field on charge P

F = qE =  4 x 10^-6 x 115.2 x 10³ F = 0.46N

Since this force in the direction of positive x axis so angle  = 0^o

Mirage is formed by total internal reflection in deserts where due to heating of earth, refraction index of air near the surface of earth becomes lesser than above it.

Since Potential difference between two points in equipotential surfaces is zero, the work done between two points in equipotential surface is also zero.

Momentum is conserved in all types of collision whether it is elastic or inelastic where as kinetic energy is lost in sound energy in the absence of external force in inelastic collision.

I1/I2 = W1/W2 = 100/1 = (a1/a2)²
a1/a2 = 10/1
a1 = 10x
a2 = x
Imax/lmin = (a1+a2/a1-a2)²
(10x+x/10x-x)²
(11x/9x)²
(11/9)²
121/81

According to Gauss’s principle, if there is no charge bound inside a surface, net electric flux coming out of the surface will always be 0. In this case, the charge is kept outside the surface, so it will generate no field lines and hence no flux inside the surface. The situation will be the same if an electric dipole is placed inside a surface as the dipole has equal positive and negative charges; the total charge inside the surface becomes 0.

Power = energy / time.
energy = power × time.
energy = watt × hour
= 1watt × 1hour
= 1 × (60×60)
= 3600
= 3.6 × 10³ joule

Explanation:In order to take a safe turn, the cyclist has to bend a little from his vertical position. In this case, a component of the reaction provides the required centripetal force.If q is angle made by the cyclist with the vertical then

In actual practice, the value of q is slightly less because the force of friction also contributes towards the centripetal force.

All languages will be taught with high quality to all students; a language does not need to be the medium of instruction for it to be taught and learned well. The teaching of all languages will be enhanced through innovative and experiential methods, including through gamification and apps, by weaving in the cultural aspects of the languages - such as films, theatre, storytelling, poetry, and music - and by drawing connections with various relevant subjects and with real-life experiences.

Key Points

•  In addition to high-quality offerings in Indian languages and English, foreign languages, such as Korean, Japanese, Thai, French, German, Spanish, Portuguese, and Russian, will also be offered at the secondary level, for students to learn about the cultures of the world and to enrich their global knowledge and mobility according to their own interests and aspirations.
• It can be studied as an additional option.

Thus, it is concluded that National Education Policy (NEP) 2020 recommends the study of foreign languages as additional options at the secondary stage.

Learners Characteristics:

• The concept of learner's characteristics is used in the science of learning and cognition to designate a target group of learners and define those aspects of their persona, the academic, social, or cognitive self that may influence how and what they learn.
• Learners' Characteristics are important for an instructional designer as they allow them to design and create tailored instruction for a target group. It is expected by taking into account of the characteristics of learners, more efficient, effective, and/or motivating instructional materials can be designed and developed.
• Learners' Characteristics can be: Personal, Academic, Social and emotional, and Cognitive.

Important Points

One of the important characteristics that is highly related to the effectiveness of teaching is

1. Prior experience of the learner:

• Prior experience of the learner is based on the learner's Academic characteristics. 
• To facilitate learning, one of the fundamental principles instructors employ is understanding students' prior knowledge.
• It is also important to assess prior knowledge and skills early since such information could be used to help foster student engagement and critical thinking in the course.

​Key Points

Other characteristics that affect the learning experience of the learner are:

1. Educational status of the parents of the learner:

• This is based on the learner's characteristics.
•  Parents play an important role in their children's learning.
• Aside from being actively involved in their children's education, parents also provide a home environment that can affect learning.

​2. Peer groups of the learner: 

• The term peer learning refers to situations where peers support each other in learning processes.
• Peer learning occurs among peers from similar social groupings, who are not professional teachers, helping each other to learn and in doing so, learning themselves.

​3.  Family size from which the learner comes:  

• Large numbered families whether rich or poor are difficult to maintain, they are characterized by a high number of children this does not create convenience for learning.
• They also create in the upbringing of children some identified problems such as feeding, poor clothing, insufficient funds, lack of proper attention for children, disciplinary problems, and malnutrition which impact negatively children's academic performance.​

Therefore, the prior experience of the learner is highly related to the effectiveness of teaching.

Learning is defined as a process of behavior modification through experiences, exercise, and efforts. Learning occupies a very important place in our life. It provides a key to the structure of our personality and behavior. Experience, direct or indirect, plays a very important and dominating role in molding and shaping the behavior of the individual from the very beginning.

Teachers play the most crucial role in moulding the behaviour of learners. This shaping of behaviour is achieved through planning and dedication.

The Primary duties of a teacher include:

• to achieve all-round development of students by guiding the students in their learning process.
• to provide motivation for learning.
• to stimulate learners in order to realize their optimum potential.
• to plan the teaching and learning process to suit the needs of the students.
• to promote learning by providing a conducive environment.
• to encourage learners to become active learners.

​Although imparting knowledge and values into the students are important duties of a teacher. However all round development of students is the most important and vital duty of a teacher.

Thus, the primary duty of the teacher is to help in all round development of the students.

Behaviour of primary level students can be assessed by periodic observation of activities of the students. This provides a direct way of assessment. By observing the behaviour of a student, the teacher can understand his/her needs and can also get to know about him/her better.

The teacher is seen as a facilitator of learning. The progress of learning varies from individual to individual. Knowledge and values are reasoned and inquiry is the preferred mode of learning.

Key Points

•  A teacher’s duty is to help students develop intellectually, socially, physically, emotionally, and morally so as to bring about their all-round development. 
• Teachers should be learning facilitators rather than didactic instructors or preachers and in order to be successful as learning facilitators, they should be trained to be sensitive and caring, genuine and empathetic.
•  A good teacher must be resourceful and participative.
• Effective teachers emphasize healthy social and interpersonal development and test-oriented approaches to the subject matter. 
• Effective teachers are found to have more elaborate systems of knowledge for analyzing problems in teaching. 
• Content mastery or deep knowledge of the subject that the teacher is to teach is an important trait of an ideal teacher.
• Teachers who are firmly rooted in their subject knowledge make clearer presentations and recognize students' difficulties readily. They can handle the queries of their students effectively

Thus, it is concluded that a good teacher must be resourceful and participative.

Teaching refers to the actions of someone who is trying to assist others to reach their fullest potential in all aspects of development. Teaching would result when the teacher indulges in any activity with the intention that pupils would learn something as a consequence of it. It is the processes meant for bringing about changes in the cognitive structure (structure of knowledge in one’s mind i.e. thinking power) in those who are being taught.

Objectives of Teaching:

• Developing self-confidence in students.
• Provide opportunity where the student constructs their knowledge on their own.
• Addressing the diverse needs of all students.
• Use various innovative teaching method to encourage them to discover new knowledge. For example, the project method of teaching.
• Improving life long learning skills in students.
• Fostering potential of students to grow and bloom.
• Transmission of new knowledge of facts, concepts, theories, laws, principles

Key Points

• In the case of classroom instructions, the teacher is concerned about bringing changes in the behaviour of learners and we call that specific objective as behavioural objective. Behavioural objectives are the objectives written in behavioural terms.
• It explains the change in the state of the behaviour of an individual on completion of a learning activity. So, Stimulate curiosity of students to discover knowledge is one of the chief objectives of Teaching.

Former Pakistan Prime Minister and Pakistan Peoples Party (PPP) leader Yusuf Raza Gilani has been elected Chairman of the Senate, the upper house of Parliament. PML-N's Syedul Khan Nasir was elected unopposed as Deputy Chairman of the Senate. In a session of the Pakistani Senate, a total of 41 newly elected senators took oath as members of the House.

An EVS teacher should accept and respect perception of children. She must respect and accept the students and their perceptions.

Complement of 30°20′ = 90° – ( 30°20′ ) = 90° – ( 30° + 20′ )
= (89° – 30°) + (1° – 20′)
= 59° + 60′ – 20′ [ ∴ 1° = 60°′]
= 59° + 40′ = 59°40′.

i) Rohit walked 30m towards South.
ii) Took a left turn and walked 50m
iii) Again he took a left turn and walked 30m.
Drawing the Diagram as per the given information:

AB = CD = 50m
Thus we can see he is 50m far from the starting point.
Hence, the correct answer is "50m".

1) GRASS – FEARLESS (Cannot be formed because G is missing)

2) RESEAL – FEARLESS (Can be formed)

3) LESSER – FEARLESS (Can be formed)

4) ERASE – FEARLESS (Can be formed)

Hence, the correct answer is “GRASS”.