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

• A physical quantity is a physical property of a phenomenon, body, or substance, that can be quantified by measurement.
• A physical quantity can be expressed as the combination of a magnitude expressed by a number – usually a real number – and a unit.
• All these given above can be expressed as explained so these are physical quantity.

Plane mirror always forms a virtual image of the real object for all the rays emitted by the object. So, when a point source of light is placed in front of a  plane mirror, all the reflected rays meet at a point when produced backward.
Option A is correct.

  (orbital speed υ₀ of a satellite)

Near the earth’s surface is equal to 1/√2
times the escape velocity of a particle on earth’s surface) Now from conservation of mechanical energy: Decrease in kinetic energy = increase in potential energy

The work done by a conservative force is equal to zero when the force is applied perpendicular to the displacement. In this case, the force acts against the direction of motion, resulting in negative work done. As conservative forces are path-independent, the negative work done cancels out the positive work done in other parts of the path, resulting in a net work of zero.

Here

A and C are the correct options.

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

Spin and Orbital angular momentum arise due to the presence of unpaired electrons. If there are unpaired electrons, these momenta will be there otherwise not.

We have to simply calculate the range of the projectile.
► R = u²sin2θ/g
► R = (10)² * sin (2 * 30º) / 10 
► R = 10 * (√3/2) = 8.66 m 

By law of conservation of angular momentum, in the absence of external torque angular momentum is conserved.
For angular momentum to be constant
τ = 0
Central force: zero torque

[E] = [F][d]
= [P/T][A]^½ 
[E] = P¹A^½T^-1

Since the opening or closing the switch does not affect the current through G, it means that in both the cases there is no current passing through S. Thus potential at A is equal to potential at B and it is the case of balanced wheatstone bridge..

I_P = I_Q and I_R = I_G

Mica capacitors are preferred for high frequency circuits because they have low ohmic losses and less reactance.

Although eddy currents are undesirable, still they find applications in the following devices:

• Induction furnaces
• Electromagnetic damping
• Electric brakes
• Speedometers
• Induction motor
• Electromagnetic shielding
• Energy meters

The only component that dissipates energy in ac circuit is the resistor because  Pure Inductive and pure capacitive circuits have no power loss.

We know that density of Hg = 13600 kg/m.m.m
= 13600 x 1000 g / 100cm x 100cm x 100cm
= 13.6 g/cm.cm.cm

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

When a machine is lubricated with oil friction decreases. Hence the mechanical efficiency of the machine increases.

Yes, the angle of dip at a place is equal to 45^o, when the vertical and horizontal components of earth’s magnetic field are equal. In this case ➔ δ=45^o

So, B_V=B_H.

Newton’s law of cooling is to be used at temperatures around room temperature.

Magnetic field part of a harmonic electromagnetic wave in vacuum
,B₀​=510×10⁻⁹T
Speed of light,
C=3×10⁸m/s
E=cB_o​=153N/C

By physically conducting experiments and recording outcomes, students actively participate in the learning process, making it more meaningful and memorable.

Key Points

• Through this hands-on approach, students develop a concrete understanding of probability concepts like sample space, equally likely outcomes, and relative frequency.
• They observe patterns and begin to grasp the concept of probability intuitively.
• This activity also encourages critical thinking as students analyze the data they collect and draw conclusions about the likelihood of different outcomes.
• Moreover, the activity promotes teamwork and communication skills as students discuss their findings and observations with their peers.
• It creates an interactive and dynamic learning environment, fostering curiosity and a deeper appreciation for mathematics.

Hence, it can be concluded that Asking students to throw a dice or flip a coin and note down the number of times each possibility occurs is the best approach.

The teaching method is a way to put theory into practice. It generally describes the pedagogy of children, general principles, and management strategies that are to be used through the whole teaching-learning process. It helps to ease the learning pace of students.

Key Points

The project method or activity-based method is based on learning by doing.

• These methods make learning realistic and experimental.
• It aims to make students think independently and is a target-driven activity based on the challenge, fostering success and efficient cooperation.
• These methods follows the maxims of teaching like known to unknow, seen to unseen, simple to complex, concrete to abstract.
• Learning by doing and experiencing the consequences of one's own actions. 
• To enhance the skills and understanding of the learners as they gain knowledge by engaging with the contents and experiences.

Important Point

The whole knowledge travels from known to unknown, concrete to abstract, simple to complex, and from seen to unseen. The same principle is applied in classroom teaching and is the very aim of education at the highest level.

From concrete to abstract:

• The abstract is confusing, difficult to understand, and subjective. The acquisition of new knowledge may become a simpler task when it is supported with concrete examples, objects, and events.

Hence we can say that the basis of the project or an activity-based method is going from concrete to abstract.

Students feel humiliated being criticised by a teacher in front of their peers. So, handling discipline issues without an audience allows for better, more genuine exchanges, since the student responses will not be witnessed by classmates.

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.

She should keep her pace of teaching slow, while paying extra attention towards the weaker students. It will be beneficial to both weak and intelligent students, and will not cause lack of interest in bright students too.

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.

The Indian Air Force (IAF) is set to conduct ‘Gagan Shakti-2024’, the nation’s largest air military exercise, involving all Air Force stations. Held every five years, it will commence on April 1, 2024, at Pokhran’s field firing range. Approximately 10,000 airmen will participate, with maneuvers spanning the Western and Northern fronts. The Indian Army is aiding logistical support, ensuring synergy across sectors for operational rail mobilization.

Q, R, S, T, U, and V are seated in a straight line facing North.

i) S is second to the right of T.

ii) T is second to the right of Q.

iii) R is to the immediate left of Q

iv) R is to the immediate left of Q and is second to the left of V.

Thus we can see there are two persons seating between S and V.

Hence, the correct answer is "Two".