AWES PGT Physics Mock Test - 5 - AWES TGT/PGT MCQ

India recently overtook Hong Kong as the world’s fourth-largest equity market, boasting a total market value of $4.33 trillion, surpassing Hong Kong’s $4.29 trillion. The leading global stock markets are currently the U.S., China, and Japan. This milestone underscores India’s rising prominence in the global financial arena, propelled by a robust GDP, political stability, foreign investments, and its appeal as an alternative to China. Meanwhile, Hong Kong grapples with challenges like COVID-19 restrictions, regulatory crackdowns, a property crisis, and geopolitical tensions, affecting its attractiveness to investors.

According to the latest report of the United Nations Development Program (UNDP) on human development, India is ranked 134th in the global Human Development Index (HDI). Whereas India, its neighbor China and Sri Lanka are ranked 75th and 78th respectively in the high human development category. India is classified under 'medium human development'. Bhutan is at 125th and Bangladesh at 129th.  

Linguistic Intelligence is associated with the ability of students to use words in a proper way. These students like reading, writing poetry, playing word games, etc. 

The National Education Policy 2020 aims to bring transformational reforms in school and higher education and thus shape India into a global knowledge superpower.

• This policy will usher in sweeping changes to the education policy of the country, including a renaming of the Ministry of Human Resource Development as the Education Ministry.

Key Points

• NEP 2020 is based on the principle that education must develop not only cognitive capacities but also social, ethical, and emotional capacities and dispositions.  
• < />NEP-2020 has given emphasis on conceptual understanding, creativity and critical thinking, human ethical values, and constitutional values.
• < /> It proposes that experiential learning should be encouraged to promote conceptual understanding as experiential learning refers to learning by gaining experience through active involvement. 
• As per National education policy 2020, education must adopt experiential learning including hands-on learning, arts-integrated and sports-integrated education, story-telling-based pedagogy, etc.

Hence, it can be concluded that National Education Policy 2020 states that learning should be experiential.

The language acquired from birth by a child with the help of family members is known as First Language.

Language is a tool to communicate with the world. Considering the size of the world, there have been many civilizations in different parts of the world which have developed different languages.

• A first language is a language that a person has been exposed to from birth. The first language of a child is part of the personal, social, and cultural identity.
• The language that we learn from our childhood is usually spoken by our parents, family members, and the other people around us. This is known as our first language or L1.
• Since this is the language we know best and use commonly, the government decided that the medium of instruction at the primary stage should be one’s own regional language.
• The first language is acquired naturally, through interacting with family members and friends without much formal instruction.
• But even though, we may communicate effectively in our first language, many of us do not have complete knowledge of all the sounds and letters of the language or its grammar. This is because we acquire it informally. Therefore formal instruction in the first languages is provided in the School.

λ=hc/E​=1240evnm /15×103 ​=0.083 nm
Since the order of wavelength is between 10 nm and .001 nm, it belongs to X-ray. part of the spectrum.

Long distance radio broadcasts use short-wave bands because they can be reflected by the ionosphere of the earth's atmosphere and thus can be send to longer distances.

While in the pike position the body decreases in radius as each segment moves closer to the axis of rotation, resulting in angular velocity increasing and a decrease of moment of inertia. Thus, during a dive, angular momentum is constant meaning that moment of inertia is inversely proportional to angular velocity.

Kinematic equations of rotational motion about a fixed axis,

where ω is the instantaneous angular velocity, α is the instantaneous angular acceleration, θ is the angular displacement, and t is time.

EXPLANATION:

Given: Length of the rod = L, and angular displacement θ = 2t²

• Using the first equation,

• Using the second equation, 

Therefore option 4 is correct.

The situation is shown in the figure.
F_E= Force due to electric field F_B = Force due to magnetic field It is given that the charged particle remains moving along X-axis (i.e. undeviated). Therefore  F_B = F_E

Lines in the spectrum were due to transitions in which an electron moved from a higher-energy orbit with a larger radius to a lower-energy orbit with smaller radius. The orbit closest to the nucleus represented the ground state of the atom and was most stable; orbits farther away were higher-energy excited states.

Fringe width is inversely proportional to the distance between slits so it will be doubled.

• The no load current is about 2-5% of the full load current and it accounts for the losses in a transformer.
• These no-load losses include core(iron/fixed) losses, which contains eddy current losses & hysteresis losses and the copper (I²R) losses due to the no Load current.

Davisson and Germer Experiment, for the first time, proved the wave nature of electrons and verified the de Broglie equation. de Broglie argued the dual nature of matter back in 1924, but it was only later that Davisson and Germer experiment verified the results. The results established the first experimental proof of quantum mechanics. In this experiment, we will study the scattering of electrons by a Ni crystal.

Time taken by first drop to cover 5 cm (u = 0), is: 
h = 1/2 gt²
5 = 1/2 x 10 x t²
t = 1 sec
Hence, the interval is 0.5 sec for each drop.
Now distance fallen by second drop in 0.5 sec
h₁ = 1/2 gt²
= 1/2 x 10 x (0.5)²         
= 5 x 0.25 
= 1.25 m
Height above the ground ( of 2^nd drop) = 5 - 1.25 = 3.75 m

When rubber ball completely filled with water its centre of gravity will be at its centre, as water will fall through hole its COG will shift towards lower side leading to increase in length of pendulum and thus T, when very small amount of water will be left in rubber ball its COG will again shifts upward causing decrease in length and thus T, and finally when rubber ball becomes empty its COG will be at its centre and T will remains same as earlier.

Length of the wire, l =15 m
Area of cross-section of the wire, a = 6.0 × 10⁻⁷ m²
Resistance of the material of the wire, R = 5.0 Ω
Resistivity of the material of the wire = ρ
Resistance is related with the resistivity as,
ρ=RA/l
=5.0×6×10⁻⁷/15
=0.2×10⁻⁶Ωm

The final image of the moon should be formed at a distance of 100 cm. Using a concave lens of focal length 100 cm will enable him  to see the moon distinctly.

Focal length of lens =-100 cm

A dimensionless quantity can have unit. for example angle (radian). But oppisite is not true. A unitless quantity can never have dimensions.it is the unit that give dimensions.

In physics, two wave sources are perfectly coherent if they have a constant phase difference and the same frequency (amplitude may be different).
As c be the speed of light which is constant.
Using, c=νλ
Now the same ν gives the same λ. for the two light sources.
Example: y₁​=A₁​sinwt and y₂​=A₂​sin(wt+ϕ) where ϕ is constant.

The nature of light which is verified by the interference event is wave nature. Even though light has dual nature interference experiments only tell us about the wave nature.

Radius of the circular path, r = 70m
Time takes to complete one round, t = 11s
Total length of the path, s = 2πr = 2*22/7*70 = 440m

According to the question, the resultant field is inclined at 45o with earth's magnetic field.
tanθ=B_H​​/B
θ=45^o
tanθ=1=B_H​​/B
B_H​=B= μ_o​M​/4πr³
Given, B= 0.42×10⁻⁴T
M=5.25×10⁻²J/T
Therefore,0.42+10⁻⁴=10⁻⁷×[(5.25×10⁻²)/r³]​
r³=12.5×10⁻⁵=125×10⁻⁶
r=5×10⁻²m = 5 cm

In option A, v is inversely proportional to mass. Hence, the condition of the question is seen accurately in that option.

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

Magnetic field due to current carrying loop = Magnetic field due to straight wires

B = B₁cos θ + B₂cos θ = 2 B₁cos θ

The current is from P to Q in wire 1 and from R to S in wire 2.

Dipole is the combination of two equal but opposite charges, kept at a certain distance. If it is placed in a uniform electric field, both the charges will suffer the same but opposite forces on them. As a result, the net force on the dipole becomes zero, but due to equal and opposite forces acting on two different points, there is a net torque acting on the dipole.

Explanation:We know that in capacitor Current leads Voltage by 90degree. Over one complete cycle, in first quarter cycle Capacitor charges and next quarter cycle it's discharge. This will continue in next negative half cycle. So the NET POWER ABSORB IS ZERO.

Explanation for the Gravitational Force Between the Earth and the Moon

• According to Newton's Third Law of Motion, every action has an equal and opposite reaction. This law applies to the gravitational forces between two bodies as well.
• The gravitational force with which the Earth attracts the Moon is equal to the gravitational force with which the Moon attracts the Earth. This is because the forces are action and reaction pairs, as described by Newton's Third Law.
• Therefore, if the Earth attracts the Moon with a gravitational force of 10²⁰ N, then the Moon attracts the Earth with the same gravitational force of 10²⁰ N.

Hence, the correct answer is b. 10²⁰ N.