AWES TGT Physics Mock Test - 2 - AWES TGT/PGT MCQ

World Oral Health Day is observed annually on March 20th. It is a global initiative led by the World Health Organization (WHO) to raise awareness about oral health, promote the prevention and treatment of oral diseases, and address the increasing burden of oral health issues worldwide.

Key Points

Monsoon in India:

• The southwest monsoon sets in over the Kerala coast by 1st June and moves swiftly to reach Mumbai and Kolkata between 10th and 13th June.
• By mid-July, southwest monsoon engulfs the entire subcontinent
• During April and May when the sun shines vertically over the Tropic of Cancer, the large landmass in the north of the Indian ocean gets intensely heated.
• This causes the formation of intense low pressure in the northwestern part of the subcontinent.
• Since the pressure in the Indian Ocean in the south of the landmass is high as the water gets heated slowly, the low-pressure cell attracts the southeast trades across the Equator.
• These conditions help in the northward shift in the position of the ITCZ.
• The southwest monsoon may thus, be seen as a continuation of the southeast trades deflected towards the Indian subcontinent after crossing the Equator.
• These winds cross the Equator between 40°E and 60°E longitudes.
• The shift in the position of the ITCZ is also related to the phenomenon of the withdrawal of the westerly jet stream from its position over the north Indian plain, south of the Himalayas.
• The easterly jet stream sets in along 15°N latitude only after the western jet stream has withdrawn itself from the region.
• This easterly jet stream is held responsible for the burst of the monsoon in India.

Hence, the Mansoon arrives in India approximately in early June.

The time between two successive passages of the mean sun across the meridian at noon is known as mean solar time. It means that solar time is equal to one day. Some additional facts:

• 1 Astronomical Unit = 1.5 × 1011 m. It is used to determine the distance between the earth and the sun. 
• 1 Slug = 14.59 kg. It is a unit of mass in the FPS System. 
• 1 Lunar Month = 27.3 solar days. It is the time between the two consecutive full moons. 

Hence, we conclude that one solar day is of 24 hours.

Adani Total Energies Biomass Limited (ATBL), a subsidiary of Adani Total Gas Limited (ATGL), has commissioned the first phase of Barsana BioGas plant in Mathura, Uttar Pradesh. The project, developed in three phases, will have a total capacity of 600 tonnes per day, producing 42 tonnes per day of Compressed Biogas (CBG) and 217 tonnes per day of organic fertilizer. It’s set to be India’s largest agri-waste-based bio-CNG plant, costing over ₹200 crore, utilizing advanced anaerobic digestion technology for sustainability and reducing greenhouse gas emissions.

NEP 2020 emphasizes providing equal opportunities for all genders and addressing gender-based discrimination in education.

Continuous Comprehensive Evaluation is a school-based evaluation system. It promotes orderly learning and development. It includes regularity in assessment, diagnosis of learning gaps, retesting, etc. So, CCE emphasizes how learning can be observed, recorded, and improved upon. It is a 'continuous' process after each course over the entire session. 'Comprehensive' means the scheme follows both scholastic and co-scholastic aspects of students.
Hence, the correct answer is, 'How learning can be observed, recorded and improved upon.'

Explanation:for electromagnetic induction magnet and coil both may move but relative motion between must be present

And Bqv = Mv²/R Or  Using (i)
or 
∴ M ∝ R² (∵ B, q  and V are same for the given two particles)
Hence (M₁/M₂) = (R₁/R₂)²

Given from figure angle of incidence i=600
angle of refraction r=30⁰
We know μ= sin i​/sin r
μ= sin60/sin30 ​=((√3)/2) ​​×2=√3

Eddy current when produced it causes damping heat loss energy loss but it don't produce any type of sparking because the electrons are only at the surface of the conductor and the electrons do not jump off to enter the air and heat it. 

When any body or particle moves in circular orbit centripetal force acts on it and to move the object centripetal acceleration is necessary. So, when a satellite moves in circular orbit the centripetal acceleration is provided by the gravitational attraction of the earth.

white light is made up of seven colors VIBGYOR. All the seven colors will show interference, we can treat each color separately as a monochromatic light and study their interference separately. Each light will have their bright and dark fringes separately but at y=0 i.e for a center, each lights bright fringe will coincide. Two or more lights may have their bright and dark Fringe together or bright for one and dark for others may coincide depending upon the situation.

The dimensional formula of a given unit is [ML²T⁻³A⁻²].
So, from the given option only resistance has this dimensional formula so resistance is the correct answer.

The photoelectric effect can only be explained by assuming that light consists of quanta or photons, as proposed by Einstein. According to the photoelectric effect, light behaves as a particle and transfers energy in discrete amounts (quanta or photons) to electrons in a material, causing them to be emitted from the surface. This is not explained by the wave nature of light, which is why options B, C, and D are incorrect.

To have the maximum range of the emerging stream, the value of x is to be (h/2) where h is the depth of water. 

• When a conductive material is subjected to a time-varying magnetic flux, eddy currents are generated in the conductor.
• These eddy currents circulate inside the conductor generating a magnetic field of opposite polarity as the applied magnetic field. The interaction of the two magnetic fields causes a force that resists the change in magnetic flux.
• However, due to the internal resistance of the conductive material, the eddy currents will be dissipated into heat and the force will die out. As the eddy currents are dissipated, energy is removed from the system, thus producing a damping effect.

Work required to turn the dipole is given by
W=MB[cosθ_i- cosθ_f]
Here θi is the initial angle made by a dipole with a magnetic field and   is the final angle made by a dipole with a magnetic field.
magnetic moment is normal to the field direction.
so, θ_i=0 and θ_f=90
W = 1.5 × 0.22 [ cos0° - cos90° ]
W = 0.33J
 
magnetic moment is opposite to the field direction.
so, θ_i=0 and θ_f=180
now, W = 1.5 × 0.22 [ cos0° - cos180°]
= 0.33 [ 1 - (-1) ]
= 0.66 J

When the source is moved away from the emitter, intensity of the incident radiation decreases but frequency remains the same so there will be no change in the stopping potential. Thus, it remains constant.

Given Data:

Mass of each block: m = 250 g = 0.25 kg,

Spring constant: k = 2 N / m,

Initial velocities of blocks: v (in opposite directions).

When the two blocks move with velocity v in opposite directions, the system's kinetic energy is converted into potential energy stored in the spring at the point of maximum elongation.

The total kinetic energy of the two blocks is:

The potential energy stored in the spring at maximum elongation (x) is:

At maximum elongation, all the kinetic energy of the system is converted into potential energy:

Let the radii be r₁​ and r₂​ respectively.
Since there are two turns of radius r₂​, r₁​=2r_2​
Magnetic field B at the centre of  the coil of radius r_1​ B_1​=​μo​i/2r₁​=​μ_o​i​/4r₂
Magnetic field B at the center of the coil of radius r_2​ B_2​=2×​μ_o​i​/2r₂
∴ B₂/B₁ =(2× μ_o​i/2r₂​)/(μ_o​i /4r₂​)​ ​​=4
Hence the answer is option C, four times its initial value.
 

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

The magnetic field produced by a current-carrying coil at its center is given by the formula,
B = μ0 * (N*I/R),
where,
B is the magnetic field,
μ0 is the permeability of free space,
N is the number of turns in the coil,
I is the current through the coil, and
R is the radius of the coil.
In this case, both the coils carry the same current but in opposite directions. So, the fields produced by them will be in opposite directions. Also, the diameter of the inner coil is half that of the outer coil. Thus, the radius of the inner coil will be half that of the outer coil.
Therefore, the field at the center due to the inner coil will be double that due to the outer coil (because the magnetic field is inversely proportional to the radius).
Since the fields are in opposite directions, the net field at the center will be the difference between the two fields. That is, 2B (due to the inner coil) - B (due to the outer coil) = B.
So, if the field due to the outer coil is 1 T (Tesla), the net field at the center will also be 1 T.
Hence, the correct answer is 3. 1T.

c) The following points should be considered while making the circuit :

(i) An ammeter is made by connecting a low resistance R₂ in parallel with the galvanometer G₂.

(ii) A voltmeter is made by connecting a high resistance R₁ in series with the galvanometer G₁.

(iii) Voltmeter is connected in parallel with the test resistor R_T.

iv) Ammeter is connected in series with the test resistor RT.
(v) A variable voltage source V is connected in series with the test resistor R_T.

There is a long straight wire W, the current flowing direction in the wire is into the plane of paper and the point of intersection on the axis of magnet is P.
If the midpoint of the bar magnet is P then the distance from the point P to the wire will be the shortest distance.
So, the bar magnet will experience a force along the line of shortest distance.
 

Here the satellite is moving with constant velocity v and it is the gravitational force which is the necessary centripetal force to allow it to move around the earth.
Imagine this as: you are holding a string attached to a stone at other end and you whorl it in the air, now when you suddenly leave the string the stone will move outwards. This is actually tangential to the direction of previously applied force.
When this same concept is applied to the satellite, it will also move away tangentially and with uniform velocity due to zero net force in outer space and no air resistance (as space has vacuum).

The area under the stress-strain curve represents the mechanical energy per unit volume consumed by the material. This is true in the elastic range of the graph where the energy is reversibly sorted within the material. Area under the stress strain curve depicts the energy absorbed by the material prior to failure.

The plate which connected to high voltage generator induces negative charge on ball which causes attraction. When the ball strikes the positive plate, charge distribution again takes place that is the bass becomes positive and repulsion takes place. When it strikes the plate which connected to earth than its charge goes to earth and again it will be attracted towards positive plate. Hence the ball swings backward and forward hitting each plate in turn.

We know that,       g = G. m₁ m₂ / r₂
Where we know g has dimensions of acceleration
Thus [G] = [ g.r² /m₁ m₂]
= N m²kg^-2

From the releation

h= 1/2gt²  ⇒ g = 2h/t²

Taking natural logarithms on both sides, we get

ln (g)  = ln (h) - 2ln (t) + ln (2)

Differentiating

for maximum permissible errors , we add both the errors . so