AWES TGT Physics Mock Test - 8 - AWES TGT/PGT MCQ

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The Small Industries Development Bank of India (SIDBI) has announced the launch of a pilot phase of ‘Mission 50K-EV4ECO’
The pilot scheme aims at strengthening the EV ecosystem, including uptake for two, three and four-wheelers through direct and indirect lending.

Antonie Van Leeuwenhoek was a Dutch scientist who is credited with being the first person to observe and describe microorganisms using a microscope. He made his microscopes, which were far more powerful than any that had been made before. Van Leeuwenhoek's discoveries revolutionized our understanding of the microscopic world and laid the foundation for the field of microbiology.

World Down Syndrome Day is observed annually on March 21st, chosen to symbolize the 21st chromosome that causes Down Syndrome. This day raises awareness about the condition and supports individuals with Down Syndrome through various treatments and educational initiatives.

Encouraging maximum participation of students in the classroom. Help students set goals based on their interest. Giving freedom to students for expressing their ideas

A teacher should take care of each child irrespective of their disabilities. He/she should ensure the students' maximum potential. Everyone has the right to education. A teacher should ensure that his/her students derive maximum benefit from education. 
Teachers must be aware of the fact that every child is different from each other. The differences occur from physical characteristics to learning styles. The objective of education is to provide the fullest possible development of learners. The teachers should find out the different strengths and weaknesses of students before their disabilities.
Hence, the correct answer is, 'Mohan, why don't you use your crutches to go to the playground?'

Electrostatics means charges at rest, or relatively at rest so this force can be applicable only when charge produce electric field which is constant which is possible only when charges at rest or relatively at rest.

To answer this question you should know the definitions of tensile, compressive and shear stress.
Tensile stress causes change (increases the length of cylinder) in the length of the object, compressive strength changes the volume of the object (it can be applied from all sides of the object), shear stress is applied parallel to the surface of an object (in case of the cylinder shear stress will be parallel to circular surface) we can apply all the three stresses in case of cylinder hence option D is correct.

I = mr², therefore it depends on body mass and its mass distribution.
 

From equation of continuity,
A1v1=A2v2
⇒ (A1/A2) v1=( πr12/ πr22 )v1
or v1(D/d)2v1=(8×10−3/2×10−3)2×0.25m/s
=4m/s (horizontal)
Vertical component of the velocity is zero.
Now, H=(1/2)gt2
⇒t=√2H/g
Range is given by R=v2t=v2
√2H/g=4×√2×1.25/10=2m

Moment of inertia depends on distribution of mass around axis. The more the mass near the axis lesser is the moment of inertia. Four rods forming a square have more moment of inertia because of less mass near axis.

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.

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.

The magnetic field near the conducting rod due to long current carrying wire is 
B= μ₀​I/2πr ​ (using Ampere's law, ∫B.dl=μ_0​I)
Now, induced emf due to moving rod is e=Blv= (μ₀​I/2πr) ​×lv= μ₀​vIl/2πr

In the transistor circuit, the current flows from emitter to collector via base.
I_e​=I_b​+I_c​ where variables have their usual meanings.
Hence, emitter current is slightly more than the collector current.

If we take plane parallel to the length of wire function the all prints one plane will be current Field will be inversely proportional to the perpendicular distance from the wire

The resistance is R=200ohm the inductor is L=0.4 H, the capacitance is C=5  µF and the amplitude voltage is V=CV
The frequency depends on the inductance and the capacitance and it is given by,
f₀=1/ (2π√(LC))  
So, plug the values of L and C into equation 1 to get f₀
f₀=1/ (2π√(LC))=2/(2π√[0.4H)(5x10^-6)]=113Hz
for the current, we use ohm’s law to get the current,
I=V/R
Now, plug the values for V and R to get I
I=V/R=3V/200Ω=0.015A=15mA
 

The direction of these circular magnetic lines is dependent upon the direction of current. The density of the induced magnetic field is directly proportional to the magnitude of the current. Direction of the circular magnetic field lines can be given by Maxwell's right hand grip rule or Right handed cork screw rule.

We know that coefficient of viscosity (η)= Fr/Av where F = tangential force, r = distance between the layers , v = velocity and A is the area of the surface.
 Thus we get [η] = MLT^-2.L / L². (L/T)
= M / LT
Thus its unit is kg / m sec

Magnetic field part of a harmonic electromagnetic wave in vacuum
,B₀​=510×10⁻⁹T
Speed of light,
C=3×10⁸m/s
E=cB_o​=153N/C

Explanation:Alternating Current is the current in which the polarity of source continuously changes on a fixed frequency. So the positive and the negative terminals ‘alternate’

L = Iw
L is the angular momentum, I is the Moment of Inertia and w is the rotational velocity.
[I] = [ML²T⁰], [w] = [M⁰L⁰T^-1]
[L] = [MLT^-1]

An oscillator is a circuit which produces a continuous, repeated, alternating waveform without any input. Oscillators basically convert unidirectional current flow from a DC source into an alternating waveform which is of the desired frequency, as decided by its circuit components.

According to all figure given,
The magnetic field due to square shape in all options will be zero, Because distribution of current will be less in the ϕ longer path. But its cumulative effect of the magnetic field at the centre will be the same.
 
In option (A) and (B) current line is passing through the centre, So its perpendicular distance will be zero, so magnetic field in Both (A) and (B) will be zero due to incoming and outgoing current.
Refer image .1
 
Whereas in case of (D) Magnetic field due to incoming current and outgoing current will be equal and opposite so it will cancel out these effects.
Refer image .2
be in case of (C) Magnetic field will be in same direction with equal magnitude by the incoming and outgoing current, So its effect will not cancel 
Option C.

F. B. D. of block with respect to wedge.

Unit of angular frequency is rad/sec which can be said as angle/time. As angle is dimensionless and time has dimension T, we get the dimension of angular frequency as T^-1. So it has 0 dimensions in length.

+Q charge is moving on equatorial line of dipole as shown in figure, since on equatorial line V=0,
Hence the potential difference is zero. So, W=0

In beam balance we consider the torque at centre of beam which is moment of force at its each end.

• When an object is moving along a straight path, the magnitude of average velocity is equal to the average speed.
• Therefore, the numerical ratio of average velocity to average speed is one in a straight line motion.
• But, during curved motion, the displacement < distance covered, so the velocity < speed.

​Therefore, the numerical ratio of average velocity to average speed is equal to or less than one but can never be more than one.