EMRS PGT Physics Mock Test - 1 - EMRS MCQ

The correct answer is Red.

Key Points

• Sulphuric acid is also known as the oil of vitriol.
• It is composed of sulfur, hydrogen, and oxygen element.
• The acid has a very strong acidic nature.
• It has several uses such as fertilizer manufacture, mineral processing, oil refining, and wastewater processing.
• It is also known by the name hydrogen sulfate.

Important Points

• The litmus solution is a purple dye solution.
• It is extracted from the plant called " Lichen".
• It is used as an acid-base indicator.

The main triangle shown is in the given figure and this the total no. of triangle is 15. remaing triangle we can find out in the drawing the triangle in the image.

The family chart is as follows:

i) A is father of C and D is son of B.

ii) E is brother of A.

iii) If C is sister of D

Drawing the family tree as per the given information:

Thus we can see B is the wife of A.

E is the brother of A.

Thus we can conclude B is the sister-in-law of E.

Hence, the correct answer is "Sister-in-law".

According to question,
A's weight is twice as much as of B.
1. A = 2B.
B's weight is four and half times as much as of C.
2. B = 4.5C
C's weight is half times as much as of D.
3. C = D/2.
D's weight is half as much as of E.
4. D = E/2.
E weight is less than A but more than C.
5. A > E > C
from 1 and 2
6. A = 2B = 9C
from 6 and 3
7. A = 2B = 9C = 4.5D
from 7 and 4
8. A = 2B = 9C = 4.5D = 2.25E
so from 8 and 5
A > B > E > D > C
Descending order of weights of the articles will be
A, B, E, D, C

The correct answer is Type a story.

Key Points

• A word processor is a  computer program that provides for input, editing, formatting, and output of text, often with some additional features.
• Early word processors were stand-alone devices dedicated to the function, but current word processors are word processor programs running on general-purpose computers.
• The word processor is generally used to type a document like a story, article, etc.

Additional Information

• MS Paint is used to paint the picture.
• MS Excel is used to work out income and expenses.
• MS Powerpoint is used to draw a diagram and present it in slide form.
• MS Access is used to create, store a database.

In explore learning phase, the students investigate the topic more thoroughly. They need not be over-directed and need to find their way to the materials. They will need some direction and the teacher can circulate, asking important questions, listening to their interactions, and ensuring that they remain on task.
The 6 E's and S (Engage, Explore, Explain, Elaborate, Evaluate, Extend, and Standards) lesson plan format was developed by teachers, in consultation with faculty from schools of education, and is based on a constructivist model of teaching. The lesson plans are based on constructivist instructional models, with activities and sections of the plan designed to have the students continually add (or construct) new knowledge on top of existing knowledge.

A teacher can be satisfied with his quality of teaching if he/she is able to get counter questions from students on the concepts which have been taught in class. This ensures that the student is able to understand the concept and shows interest in the subject.

Initial velocity = u = 20 m/s 
Final velocity = v = 0     ( at maximum height , v = 0 )
Acceleration due to gravity(g)  in this case, is taken as negative.
This is because when the direction of motion of object is opposite to "g" , then value of g is taken as -ve.
Hence, g = -9.8 m/s²
Using v² - u² = 2gh
0² - 20² = 2 * (- 9.8) * h
- 400 = -19.6 h
h = - 400 /(-19.6) = 20.408 m (approximately)

Total initial angular momentum = I₁ω₁ + I₂ω₂ 

When the discs are joined together, total moment of inertia about the axis becomes I₁ + I₂​.

Let the angular speed of the two-disc system be ω.

Then, from conservation of angular momentum:

 Answer :- b

Solution :- In a purely inductive circuit (an AC circuit containing inductance only) the current lags behind the voltage by π/2

 Option is not correct because there is relation between current & voltage in inductance

Explanation:Work done is positive when force applied and displacement are in same direction.

W=F .s =Fscosθ

in this case angle between force and displacement is zero (i.e. cosθ=1) so that work done is positive.

Refractive index of glass with respect to liquid:
n = 1.52/1.63 = 0.9325
thus, critical angle, i = sin^-1(n) = 68.8 degrees

Electric force on a charge q placed in a region o electric field intensity is E and it is given by F = qE.
In this case, F = 100 N and q = 2 C.
So, E=F/q​=100N/2C​=50 N/C.
Hence, the value of field intensity will be 50 N/C.

The unit for electromotive force is Volt.
EMF is numerically expressed as the number of Joules of energy given by the source divided by each Coulomb to enable a unit electric charge to move across the circuit.
Volts=Joules/Coulombs

Let us assume a force dF is applied at P in positive x - direction. This will stretch each spring by dl inducing a spring force dFs in each spring.

Let the static deformation of the system is dx (along the x-direction). The particle is in equilibrium. So,

Using Pythagoras theorem, 

Here y is constant. 

d ∝ 1/r

In a series RLC circuit there becomes a frequency point were the inductive reactance of the inductor becomes equal in value to the capacitive reactance of the capacitor. In other words, XL = XC.
Series Resonance circuits are one of the most important circuits used electrical and electronic circuits.
 

India's first artificial satellite was Aryabhata. Launched by soviet union on 19  April 1975

Area under F-t curve = change in momentum.

Until and unless the velocity of any object comes to zero, any peek in its displacement-time graph can’t be achieved. Which means for the height to be maximised the velocity must become zero. And any time of this motion the acceleration is always a constant downward due to gravity.

KEY CONCEPT : When a charged particle is moving at right angles to the magnetic field then a force acts on it which behaves as a centripetal force and moves the particle in circular motion.

Changes(if required): The answer provided in the forum is wrong, The correct answer would be option B.
Solution:
Given,
V_R-rms =30.0V
V_C-rms=90.0V
V_L-rms=50.0V
To find the root mean square voltage across the source, we will use the formula,
V_rms=√[V_r²+(V_L-V_C)²]
=√[(30.0V)² +(50.0V-90.0V)²]
=50.0 V

The triarchic theory of intelligence is also called the three forms of intelligence. Based on this theory, research on human intelligence take a more cognitive approach. 
Sternberg explained only three types of intelligence: Componential or analytical sub theory, Experiential or creative sub theory, and Contextual or practical sub theory. 
Hence, the correct answer is, 'Social.'

The process of socialization includes communicating with another person or a group of people. It involves actively listening to the other person and also effectively reverting the other person.

The word 'to' is used as an appropriate preposition with 'coming' in cases where a common conclusion is attained.   
Example-The trader bargained and came to a common price with the dealer.

The sentence has no error.

• 'आविर्भाव’ का उपयुक्त विलोम शब्द है - 'तिरोभाव' l
  • आविर्भाव शब्द का अर्थ है - प्रकट होना l
  • तिरोभाव शब्द का अर्थ है - अदृश्य हो जाना, अदर्शन।
  • अन्य विकल्प :- प्रकटीकरण, उद्वेलन, समभाव - 'आविर्भाव' शब्द के उचित विलोम शब्द नहीं है l

Additional Information

• जो शब्द एक दूसरे के विपरीतार्थक हो, या उल्टा अर्थ बताते हैं, विलोम शब्द कहलाते हैं l
  • उदाहरण :- अच्छा – बुरा अंकुश – निरंकुश अकाल – सुकाल

सही उत्तर 'शाश्वत' है।

• दिए गए विकल्पों में से, 'क्षणिक' शब्द का विलोम शब्द 'शाश्वत' है।
• क्षणिक का अर्थ:अस्थायी
• शाश्वत का अर्थ: सदा रहने वाला।

Key Points

अन्य विकल्पों का विश्लेषण:

आंगिक का अर्थ: अंग चेष्टा या संकेत द्वारा अभिव्यक्त होने वाला।

Additional Information

• विलोमार्थक शब्द/ विलोम: 'विलोम’ शब्द का अर्थ है- उल्टा या विपरीत।
• अत: किसी शब्द का उल्टा अर्थ व्यक्त करने वाला शब्द विलोमार्थक शब्द कहलाता है।
• विलोमार्थक शब्दों को विपर्यायवाची, प्रतिलोमार्थक और विलोम शब्द भी कहते हैं।
• कुछ महत्वपूर्ण विलोम शब्द:-