AWES TGT Physics Mock Test - 3 - AWES TGT/PGT MCQ

The correct answer is option 4.

Key Points

Article 75 of the Indian Constitution mentions that a Prime Minister is one who is appointed by the President.

• There is no specific procedure for his election or appointment.
• Article 74(1) states that there shall be a Council of Ministers with a Prime Minister at the head to aid and advise the President. 
• President of India appoints a person as the Prime Minister who is either the leader of the party which holds a majority of seats in the Lok Sabha or is a person who is able to win the confidence of the Lok Sabha by gaining the support of other political parties.

• All other ministers are appointed by the President on the advice of the Prime Minister.

Thus, it is clear that while appointing the Prime Minister, the President selects the leader of the alliance or party that has the support of the majority in Lok Sabha.

Additional Information

• President can also appoint Prime Minister at his own discretion but only when no party has a clear majority in the Lok Sabha. 

Union Home Minister Amit Shah addressed the 5th International and 44th All India Criminology Conference at the National Forensic Science University in Gandhinagar, Gujarat. The conference focused on Forensic Behavioural Science, an emerging field highlighted by Shah. Emphasizing the role of Behavioral Science in crime prevention, he inaugurated a Digital Forensic Excellence Centre for capacity building and investigations, underscoring its importance alongside a robust administration and judiciary.

Pradip Kumar Das, Chairman and Managing Director, Indian Renewable Energy Development Agency Limited (IREDA) participated in the 26th edition of the World Energy Congress held in Rotterdam, Netherlands. He also said that India ranks fourth globally in renewable energy installed capacity.      

NEP 2020 suggests a flexible higher education system with multiple entry and exit points, allowing students to choose their courses based on their interests and career goals.

Individual differences refer to how individuals differ from each other. Different people have different interests; and their behavior is influenced by these interests, likings, dislikings, values, beliefs, etc. 
For example, you may like dancing and gossiping with friends, but your friend may not like these

Special schools are schools that cater to children with special needs. Students with special needs can be classified into five categories-

• Physical impairment
• Visual impairment
• Hearing and speech impairment
• Low mental ability
• Learning disability 

Key Points

The backward child is also called a slow learner. The child is unable to cope with routine work normally expected of his/her age group. The rate of learning is the basis for identifying slow learners. Special schools are required for backward children when Backwardness is due to any serious physical handicap. He finds it difficult to keep pace with the normal child in his school work. The characteristics of backward learners are as given below: 

1. They have limited cognitive capacity.
2. For them rational thinking is impossible.
3. They have the capacity for rote learning and can retain memory whatever is learned only with a lot of practice and revision in comparison with the normal child.
4. They have poor memory.
5. They are distractive and lack concentration in the classroom.
6. They have an Inability to express through language. The slow learner has cognitive problems, language-related problems, auditory perceptual problems, visual-motor problems, and social-emotional problems.

Note:  Lower achievers don't come under students with special needs.

From the above, we can say that special schools are required for backward children when backwardness is due to any serious physical handicap as special schools are for students with special needs.

Kinesthetic/tactile persons learn best through a hands-on approach, actively exploring the physical world around them. Thus, using the hands-on approach may not help Sita much.

The field theory of learning in children, in which the learner perceives and responds to the whole situation, comes under Kohler's theory of understanding.

The associative theory of learning in children is described on the basis of stimulus response. In this, a relationship is established between the stimulus response. It is also called stimulus response or S-R principle.

In an inductor, current lags behind the input voltage by a phase difference of π/2.
Current and voltage are in the same phase in the resistor whereas current leads the voltage by π/2 in a capacitor.
So, the circuit must contain an inductor only.

Frictional forces act over the common surfaces of the two bodies to avoid and restrict relative moment between those two surfaces.

Refractive index of glass with respect to liquid:
n = 1.52/1.63 = 0.9325
thus, critical angle, i = sin^-1(n) = 68.8 degrees

An analyser or analyzer is a person or device that analyses given data. It examines in detail the structure of the given data and tries to find patterns and relationships between parts of the data. An analyser can be a piece of hardware or a computer program running on a computer.

When a diamagnetic material is placed in an external magnetic field the spin motion of electrons is so modified that the electrons which produce the moments in the direction of the external field show down while the electrons which produce magnetic moments in opposite directions get accelerated.
Thus, a net magnetic moment is induced in the opposite direction of the applied magnetic field. Hence the substance is magnetized opposite of the external field. Thus, it moves from stronger. Weaker parts of the magnetic.
 

Stress = F⟂/A = (Mass x Acceleration⟂)/Cross-sectional Area

= (550 kg x 9.8 m/s²)/ (0.30×10−4 m²)

= 1.8×10⁸ Pa

Young's ModulusSteel (Y) = 20×10¹⁰ Pa = Stress/Strain

=> Strain = Stress/Y = 1.8×108 Pa / 20×10¹⁰ Pa

= 9.0×10⁻⁴ 

Time period, T=2π√l/g
=>T∝√l
=>ΔT/T=1/2 Δl/l
Δl/l=1%
Therefore, ΔT/T=1/2x1%=0.5%

The resolving power of a telescope is given by

So, the resolving power of a telescope depends on the diameter of the objective lens.

in time   first function completes one oscillation, second function two oscillations and the third three

so for the combination T = 2π/ω

Concept:

Central force:

• The central force in classical mechanics is defined as the force that is acting on an object which is directed along the line joining the object and the origin.
• The magnitude of the central force depends only on the distance of the object and the centre.
• Due to the central force, the body moves or tends to move in a circular or an elliptical orbit around an axis.
• Since there is no torque due to the central force. So, the angular momentum will remain constant.
• Some example of central forces is gravitational force and electrostatic force.

Explanation:

Let, r represents the distance of the particle from origin and r̂ is radial direction, than central force

F(r) = F(r)r̂ 

So the torque acting on it

τ = r × F(r)r̂

⇒ τ = r × F = F(r) (r × r)

⇒ τ = 0    ......(1)

Let p = mv = linear momentum,

Now we know that momentum is also conserved in this case, therefore

Angular momentum L = r × P

r.L = r.(r × p)  = 0     ......(2)

Also, to know angle b/w velocity and angular momentum

v.L = v.(r × p) = 0    .....(3)

Hence, from equation (2) and (3), we can see that both the position vector r  and the velocity vector v  thus lie in the plane perpendicular to  L.

Therefore, we can say that, if a particle moving under a central force, its motion will be in phase.

Explanation:By using the phenomenon of mutual induction, transformers allow us to easily change voltage of AC. This is necessary to cut down poer losses while supplying electricity to our homes

Path difference = (l1 + l3) – (l2 + l4)
for destructive interference
Path difference = (2n + 1) λ/2
from (1) and (2)
(l1 + l3) – (l2 + l4) = (2n + 1) λ/2

T_Initial  = t K
Work, W = 9R
Ratio of specific heats, γ = C_p / C_v = 4/3
In an adiabatic process, we have
W = R(T_Final – T_initial) / (1-γ)
9R = R (T_Final – t) / (1 – 4/3)
T_Final – t = 9 (-1/3) = -3
T_Final  = (t-3) K

 As per the question, rays are falling on the mirror, which cleared that Regular reflection is taking place.
So, As per the laws of regular reflection.
=> ∠incident= ∠reflection
∠incident= ∠reflection=38A^o
Also we know that normal is at 90°to the mirror.
Now, to get the required angle we need to reduce angle of reflection from normal.
=>90A^o-38A^o=52A^o
so, the correct answer is option B.

Explanation:The materials can be classified by the energy gap between their valence band and the conduction band. The valence band is the band consisting of the valence electron, and the conduction band remains empty. Conduction takes place when an electron jumps from valence band to conduction band and the gap between these two bands is forbidden energy gap. Wider the gap between the valence and conduction bands, higher the energy it requires for shifting an electron from valence band to the conduction band.In the case of conductors, this energy gap is absent or in other words conduction band, and valence band overlaps each other. Thus, electron requires minimum energy to jump from valence band. The typical examples of conductors are Silver, Copper, and Aluminium.In insulators, this gap is vast. Therefore, it requires a significant amount of energy to shift an electron from valence to conduction band. Thus, insulators are poor conductors of electricity. Mica and Ceramic are the well-known examples of insulation material.Semiconductors, on the other hand, have an energy gap which is in between that of conductors and insulators. This gap is typically more or less 1 eV, and thus, one electron requires energy more than conductors but less than insulators for shifting valence band to conduction band.

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.

The equivalent circuits are shown in the figure.

The circuit represents balanced Wheatstone Bridge.
Hence 6R Ω resistance  is ineffective

For Max. Power External Resistance = Internal Resistance 2R = 4 Ω ∴ R = 2Ω

Due to electric field, it experiences force and decelerates i.e. its velocity decreases.

An atom has a nearly continuous mass distribution in Thomson’s model, but has a highly non-uniform mass distribution in Rutherford’s model.

When velocity is uniform, velocity-time graph is straight line parallel to time axis. So, the slope is zero.

frequency-to-bandwidth ratio of the resonator:
Q=fr/△f= ωr/△ω
where fr is the resonant frequency, Δf is the resonance width or full width at half maximum (FWHM) i.e. the bandwidth over which the power of vibration is greater than half the power at the resonant frequency, ωr = 2πfr is the angular resonant frequency, and Δω is the angular half-power bandwidth.