AWES TGT Physics Mock Test - 6 - AWES TGT/PGT MCQ

Sharfuddoula has made history by becoming the first Bangladeshi umpire appointed to the ICC Elite Panel of Umpires. His selection was part of the ICC's annual review and selection process, marking a significant milestone in Bangladeshi cricket umpiring.

World Oral Health Day is celebrated annually on March 20 to raise awareness about oral health and its connection to overall well-being. It was first observed on September 12, 2007, which marked the birthday of Dr. Charles Godon, the founder of FDI World Dental Federation. The day aims to highlight the importance of oral hygiene and preventive measures against common oral diseases like cavities, which affect a significant portion of the global population.

Fitch Ratings has reaffirmed the long-term issuer default rating (IDR) of "BBB-" for both State Bank of India (SBI) and Canara Bank, with a stable outlook. This rating reflects their adequate capacity to meet financial commitments, despite variations in risk appetite and loan growth patterns observed by Fitch.

In psychology, individual differences refer to the extent and kind of variations or similarities among people on some of the important psychological aspects such as intelligence, personality, interest, and aptitude.

Mastery over the subject matter is one of the very essential factors of a teacher that affect the process of learning. 

National Education Policy 2020 is the first education policy of the 21st century and aims to address the many growing developmental imperatives of our country. This Policy proposes the revision and revamping of all aspects of the educational structure, including its regulation and governance, to create a new system that is aligned with the aspirational goals of 21st-century education.

Key PointsFeatures of NEP 2020:

• Teachers will be encouraged to use a bilingual approach, including bilingual teaching-learning materials, with those students whose home language may be different from the medium of instruction. 
• Children will be exposed to different languages early on (but with a particular emphasis on the mother tongue), starting from the Foundational Stage onwards as multilingualism has great cognitive benefits for young students.
• Multilingualism aims at using languages of all children for teaching-learning and increasing the better innate understanding of how language works. It enhances creativity, divergent thinking, and appreciation of local languages.
• As per the new National Education Policy (NEP), the medium of instruction until at least Grade 5, but preferably till Grade 8 and beyond, will be the home language/mother-tongue/local language/regional language.
• The three-language formula will continue to be implemented while keeping in mind the Constitutional provisions, aspirations of the people, regions, and the Union, and the need to promote multilingualism as well as promote national unity.

Thus,it is concluded that 'multilingualism has great cognitive benefits for young students' statement is proposed in National Education Policy 2020.

In an RLC circuit, the voltage is always used as a reference and according to the phase of the voltage, the phase of the other parameters is decided.

We know that centripetal force is required for an object to travel in an circular motion thus the acceleration of the object in circular motion will be (mv²/r) / m

We know that Pv remains constant for any fluid and for non compressible fluids like water we get that Pv is always constant.
Also as 76cm of Hg = 10⁵ Pa  
We get 2m Hg = 200/76 x 10⁵ Pa
Thus from conservation of Pv, we get that
2 x  200/76 x 10⁵  = 4 x P
Thus we get P = 100/76 x 10⁵
Thus we get P = 1.31 x 10⁵

Resultant force is zero, as three forces on the particle can be represented in magnitude and direction by three sides of a       triangle in same order. Hence, by Newton's 2nd law 

Particle velocity  will be same

Applying Bernoulli's principle, we have
P₁+1/2​ρv₁²=P₂+1/2​ρv₂² 
⇒P₂​−P₁=1/2ρ (v2/1−v2/2)
⇒ΔP=1/2​×1.3× (1202−90²)
⇒ΔP=0.65× (120+90) × (120−90)
⇒ΔP=0.65×210×30=4095Pa

We know: Vrms​=​Vo​​/√2
 
Substituting values (Here RMS Voltage is 220 V)
We get: Maximum V (or amplitude) =311V
 

The magnitude of induced emf is independent of the resistance of the coil.
∴e=−dϕ/dt=−N (d/dt) [(BA)/dt]
Thus, e depends upon N, B and A.
But induced current depends upon R.

When wetting agents like soap or dyes are added to water, the angle of contact becomes small. This happens so that the particles penetrate well and become effective.

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.

x₁ + x₂ = l₁

Differentiating with respect to time,  we get v₁ + v₃ = 0

 Again differentiating w.r.t. time, 

The result of an addition or subtraction in the number having different precisions should be reported to the same number of decimal places as present in the number having the least number of decimal places.

The final result should, therefore, be rounded off to one decimal place, i.e. 663.8

q= 4μc = 4 x 10^-6c
2l = 5mm = 5 x 10^-3m
Dipole moment  P = q.2l
= 4 x 10^-6 x 5 x 10^-3
= 20 x 10^-9
= 2 x 10 x 10^-9
= 2 x 10^-8 c.m 

its direction is toward the positive charge.

Angular momentum,
L=nh/2π​=3h​/2π (given)
also n=3
∴  E=(−1.36​/ n²)eV
E=−13.6/(3)^2​ eV
E=−13.6/9 ​eV
E=−1.57eV

 Suppose the angle between the transmission axes of the analyser and the polarizer is θ. The completely plane polarized light form the polarizer is incident on the analyser. If E₀ is the amplitude of the electric vector transmitted by the polarizer, then intensity I₀ of the light incident on the analyser is
I ∞ E₀²
 
The electric field vector E₀ can be resolved into two rectangular components i.e E₀ cosθ and E₀ sinθ. The analyzer will transmit only the component ( i.e E₀ cosθ ) which is parallel to its transmission axis. However, the component E₀sinθ will be absorbed by the analyser. Therefore, the intensity I of light transmitted by the analyzer is,
 
I ∞ ( E₀ x cosθ )²
 
I / I₀ = ( E₀ x cosθ )² / E₀² = cos2θ
 
I = I₀ x cos²θ
when light passes from polarizer it's intensity becomes half and when passed through analyser it becomes,
I = I₀ x cos²θ/2
 

The wires at A and B are perpendicular to the plane of paper and current is towards the reader. Let us consider certain points.
Point C (mid point between A and B) : The magnetic field at C due to A ( ) is in upward direction but magnetic field at C due to B is in downward direction.
Net field is zero.
Point E : Magnetic field due to A is upward and magnetic field due to B is downward but 

∴Net magnetic field is in downward direction.

Net field upwards. Similarly,, other points can be considered.

h₂ (g + a) = h₁ g

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.

Maximum speed with which the boy can throw stone is:

Range is maximum when the projectile is thrown at an angle of 45⁰ thus,

To find the time it takes for the disc to come to a complete stop, we can use the formula:
ω = ω_₀ + αt

where:
ω = final angular velocity (0 rad/s, as the disc comes to a complete stop),
ω_₀ = initial angular velocity (200 rad/s),
α = angular acceleration, and
t = time.

Rearranging the formula to solve for time (t):
t = (ω - ω_₀) / α

Substituting the given values:
t = (0 - 200 rad/s) / (-10 rad/s²)
t = 20 seconds

Therefore, it will take 20 seconds for the disc to come to a complete stop.

We know that E = hv , where E is energy and v is frequency.
Thus we get h = E/v
And [h] = [E/v] = ML²T^-2 / T^-1
= ML²T^-1
[P] = MLT^-1
[F] = MLT^-2
[Angular momentum] = [P x r] = ML²T^-1

The angular momentum L =m_e​vr is on integer multiple of h​/2π
mvr= nh​/2π
For, n=1
mvr= h​/2π
The correct answer is option B.

Given data,
Rowland ring is toroid with a core of magnetic material,
Radius of the ring r=15cm
Number of turns of the wire N=3500
Relative permeability of the core,μ_r​=800
Magnetising current, I=1.2A
Magnetic field, B=?
Using the formula for the magnetic field of a toroid,
B=μ_0​nI
Number of turns per unit length, n=N/2πr=3500/​(2π×15×10⁻²)
Therefore,
B=μ_0​μ_r​nI
The magnetic field is given by the relation,
B= μr​μ0​IN​/2πr
= (800×4π×10⁻⁷×1.2×3500)/​ 2π×0.15 =4.48T

Explanation:AC generators  operate on the same fundamental principles of electromagnetic induction.The turning of a coil in a magnetic field produces motional emfs in both sides of the coil.A slip ring  is a method of making an electrical connection through a rotating assembly. Formally, it is an electric transmission device that allows energy flow between two electrical rotating parts, such as in a motor.