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

Asif Ali Zardari was sworn in as Pakistan's 14th President, replacing Dr Arif Alvi. The oath was administered by Chief Justice of Pakistan Qazi Faez Isa at Aiwan-e-Sadr, the Presidential Palace. Zardari, aged 68, is associated with the Pakistan Peoples Party.

The executive board of the International Monetary Fund (IMF) approved a proposal to make a 50 per cent increase in the quota allocated to members in proportion to their current quotas. The proposal will now be considered and made effective by the board of governors as part of concluding the 16th general review of quotas.
Currently, India has a quota of special drawing rights (SDR) 13,114.4 million which denotes a share of 2.75 per cent, making it the eighth-largest quota-holding country in the IMF.

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.

The Indian Olympic Association has appointed Raghuram Iyer as its new CEO, a seasoned professional chosen through a meticulous selection process.

Mamta G Sagar, a Kannada poet, won the World Literary Prize for her significant contributions to literature, as recognized by the World Organization of Writers during the first Congress of WOW in Nigeria. This award highlights her achievements in winning international literature prizes.

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 period of a particle in circular motion is the time taken to complete one full revolution. The period is given by T = 2π/ω, where ω is the angular velocity. Angular acceleration, α, does not affect the period directly. The angular acceleration determines how quickly the angular velocity changes, but it does not affect the time taken for one complete revolution. Therefore, if the angular acceleration is doubled, the period of the particle's motion will remain the same.

Q = CV, where C is decided only by the geometrical factors

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

Division of wave front where wave front is divided into two or more parts with the help of mirrors, lenses and prisms. The common methods are : Young's double slit arrangement, Fresnel's biprism method, Lloyd’s mirror method etc.
 
Division of amplitude where amplitude of the incoming beam is divided into two or more parts by partial reflection or refraction. These divided parts travel different paths and reunited later to produce interference. E.g. Newton's rings, Michelson’s interferometer etc.
 

KEY CONCEPT : Magentic field at the centre of a circular coil of radius R carrying current i is 

Given : n ´ (2pr ') =2pR

⇒ nr '=R ...(1)

from (1) and (2), 

In 9s, the distance travelled = 4A × 3 = 12A 

Imagine, now it is at

Explanation:Equal vectors are vectors that have the same magnitude and the same direction. Equal vectors may start at different positions.

Because Presence of two coherent sources of radiation is one of the PRIME CONDITIONS FOR INTERFERENCE.

For the right (half) oscillation,

For the left (half) oscillation,

Moment of inertia:

• Moment of inertia of a rigid body about a fixed axis is defined as the sum of the product of the masses of the particles constituting the body and the square of their respective distances from the axis of the rotation.
• The moment of inertia of a particle  is

⇒ I = mr²

Where r = the perpendicular distance of the particle from the rotational axis.

• Moment of inertia of a body made up of a number of particles (discrete distribution)

⇒ I = m₁r₁² + m₂r₂² + m₃r₃² + m₄r₄² + -------

EXPLANATION:

Given: mass of the particle = m, distance from x-axis = b.

The moment of inertia for the particle of mass m from an axis at a distance b is,

⇒ I = mb²

Therefore option 3 is correct.

P_av=(V₀i₀/2) cosθ
In ideal capacitor θ= -π2
Cosθ=Cosθ(-π/2)=0
Therefore
P_av=0

As v = at + b / (t + c)
We get that v, at and b / (t+c) have the same dimensions as they are equated and added.
Similarly c and t have also same dimensions, [c] = T and [a] = L/T
 And [b] = L

KEY CONCEPT : Use Fleming's left hand rule. We find that a force is acting in the radially outward direction throughout the circumference of the conducting loop.

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.

Φ= hνλ => 2eV= 6.626 x 10^-34 x ν

2 x 1.6 x 10^-19= 6.626 x 10^-34 x ν

On solving we get ν = 4.6 x 10¹⁴ Hz.

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

The speed of any electromagnetic waves in free space is the speed of light c = 3x10⁸ m/s. Electromagnetic waves can have any wavelength λ or frequency f as long as λf = c.

When a light wave is reflected from an object , it changes not only it's amplitude but also its phase according to the properties of the object at a particular point. 
Therefore, option A is the right answer.

An isobaric expansion of a gas requires heat transfer to keep the pressure constant. An isochoric process is one in which the volume is held constant, meaning that the work done by the system will be zero.

Here B is implying A but A is not implying B, as kinetic energy of a system of particles is zero means speed of each and every Particle is zero. which says that momentum of every particle is zero.
But statement A means linear momentum of a system of particles is zero, which may be true even if particles have equal and opposite momentums and hence, having non-zero kinetic energy.

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.

UVA radiation is what makes people tan. UVA rays penetrate to the lower layers of the epidermis, where they trigger cells called melanocytes (pronounced: mel-an-oh-sites) to produce melanin. Melanin is the brown pigment that causes tanning. Melanin is the body's way of protecting skin from burning.