EMRS PGT Physics Mock Test - 7 - EMRS MCQ

International Yoga Day is celebrated on 21^st June every year.

Similarly;

Kargil Victory day is commemorated on 26^th July every year.

Hence, "Kargil Victory Day : 26^th July" is the correct answer.

Important Points

Preparing the family tree using the following symbol:

According to the given information,

Hence, Q is the grandmother of S.

The logic follows here is:

Middle number = square root of first number + third number.

Row-wise operation :

(25, 41, 36)

middle number = 41

= √25 + 36

= 5 + 36

= 41

(49, 45, 38)

middle number = 45

= √49 + 38

= 7 + 38

= 45

Similarly

(36, ?, 62)

middle number = ?

= √36 + 62

= 6 + 62

= 68

Hence, the correct answer is "68"

Additional Information

The most common pattern asked in exams are based on:

• It could be the sum of two numbers divided by a constant
• It could be the average of numbers.
• It could be in the form of alphabets, where alphabets are increased by constant or increased by the square of numbers or increased by prime numbers.
• It could be the difference of product of two diametrically opposite numbers.
• It could be the difference in the sum of adjacent numbers.
• The difference of the numbers could be in the patterns 13 ± 1, 23 ± 1,  and so on.
• The difference of the numbers could be in the patterns 12 ± 1, 22 ± 1, and so on.
• Numbers could be 12, 22, 32, and so on or 13, 23, 33, and so on.
• The difference could be prime numbers or the difference could be the square of prime numbers.
• The difference could be in the form of N2 ± N or N3 ± N.
• The difference could be in the form of ×N + N or ×2 + 1, ×2 + 2, ×2 + 3, and so on.
• The difference could be in the form of ×2 ± 1 alternatively.
• Numbers could be ×1, ×2, ×3, and so on. 

Count the number of squares of all sizes in the figure:

Smallest squares (1x1): 13
Squares of size 2x2: 8 [contains additional square formed by overlapping lines]
Squares of size 3x3: 5 [contains additional square formed by overlapping lines]
Squares of size 4x4: 1

Adding these, we get 13 + 8 + 5 + 1 = 27
Therefore, the total number of squares is 27.

Cloud Computing:
- Cloud computing is a form of distributed computing that involves a large number of computers connected via a real-time communication network such as the Internet.
- It allows users to access and use a shared pool of computing resources, including networks, servers, storage, applications, and services, all without the need for local infrastructure.
- The term "cloud" refers to the internet, and in cloud computing, the resources are hosted on remote servers and accessed over the internet.
- Users can access these resources on-demand and scale them up or down as needed, paying only for the resources they consume.
- Cloud computing provides a flexible and cost-effective solution for businesses and individuals, offering scalability, reliability, and accessibility.
Thin Client Computing:
- Thin client computing is a computing model where the processing and storage capabilities of the client device are minimal.
- The client device, also known as a thin client, relies on a central server or cloud infrastructure to perform most of the computing tasks.
- The thin client device typically has limited hardware specifications and relies on the network connection to access applications and data.
- This model is often used in virtual desktop infrastructure (VDI) setups, where the desktop environment is hosted on a server and accessed remotely by thin clients.
- Thin client computing reduces the hardware and maintenance costs for end-users, as most of the processing is done on the server side.
Fat Client Computing:
- Fat client computing, also known as thick client computing, refers to a computing model where the client device has significant processing and storage capabilities.
- In this model, the client device is capable of running applications locally and performing complex tasks without relying heavily on a central server or cloud infrastructure.
- The client device has a more substantial hardware configuration, including a powerful processor, sufficient storage, and memory.
- Fat client computing allows for offline work, as the applications and data are stored locally on the client device.
- This model is often used in scenarios where high performance and responsiveness are required, such as gaming or resource-intensive applications.
Dumb Terminal Computing:
- Dumb terminal computing refers to a computing model where the client device, also known as a dumb terminal, has minimal processing and storage capabilities.
- The dumb terminal relies entirely on a central server or mainframe for all computing tasks, including running applications and storing data.
- The dumb terminal acts as an input/output device, sending user inputs to the server and receiving output from the server to display on the screen.
- This model was prevalent in the early days of computing, where mainframe computers were used to perform all the processing, and the terminals were used only for input and output purposes.
- Dumb terminal computing is not widely used today, as the advancements in technology have enabled more powerful and independent client devices.
In conclusion, the correct answer is A: Cloud Computing. Cloud computing involves distributed computing over a network, utilizing a large number of computers connected via real-time communication networks such as the Internet. It provides users with access to a shared pool of computing resources and offers scalability, reliability, and accessibility.

While teaching students to save time and energy, a teacher must exploit various teaching aids. Teaching aids help in teaching faster and more effectively. They help as classroom components which create visual and interactive experiences for students and also avoid boredom.

The untrue statement about orbital velocity is:

1. increases with the increase in height of satellite

Explanation: Orbital velocity is the speed at which an object revolves around a planet or other celestial body in a stable orbit. According to the equation for orbital velocity, v = √(GM/r+h), where G is the gravitational constant, M is the mass of the planet, and r is the radius of the orbit.

As the height of the satellite increases (meaning it gets far to the planet), its h increase , so reasulting in decrease in velocity .

The other statements are true:

2. depends on mass and radius of planet around which it revolves: As mentioned in the equation, orbital velocity depends on both the mass (M) of the planet and the radius (r) of the orbit.

3. it is independent of mass of satellite: The mass of the satellite does not appear in the equation for orbital velocity, so it does not affect the speed at which the satellite orbits the planet.

4. decreases with an increase in radius of orbit: From the equation, we can see that as the radius of the orbit (r) increases, the orbital velocity (v) decreases.

Maximum acceleration = w2A
Maximum velocity = wA
Ratio = w2A/wA = w
w = angular velocity
A = amplitude

On solving we get 3L/4
 

We can generalise it by assuming a positive charge moving away from another positive charge. now both of them are repelling each other with some force. so that positive charge will accelerate which results in the increase in K.E.

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.

Answer :- a,c

Solution :- At θ=45∘,mgsinθ=1×cosθ

At θ>45∘,mgsinθ=1×cosθ (friction acts upward)

At θ<45∘,mgsinθ=1×cosθ (Friction acts downward)

xa=gsinθ−μgcosθ

• It is induced EMF of periodic EMI, So formula is:

​​​​​​​

Here w is angular speed.

In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow. It is defined as the reciprocal of impedance, analogous to how conductance & resistance are defined. The SI unit of admittance is the siemens (symbol S); the older, synonymous unit is mho, and its symbol is ℧ (an upside-down uppercase omega Ω). Oliver Heaviside coined the term admittance in December 1887. 
Admittance is defined as
Y=1/Z
where
Y is the admittance, measured in siemens
Z is the impedance, measured in ohms
 

Iron is a ferromagnetic material. Ferromagnetism decreases with a rise in temperature, and above a certain temperature called “Curie’s temperature,” ferromagnets become paramagnets. For iron, it is approximately, 800 °C.

The mechanism of transfer of heat between two adjacent parts of a body because of their temperature difference is known as conduction. This is the definition of conduction.

When the person started flying towards the planet, the person experiences the gravitational force due to the gravity of the planet, the force experienced by the man is 

When the person heads inside the planet through the hole, the gravitational force that he was once experiencing due to the shell of the planet is now gone and due to this the gravitational force on him becomes zero.
Now, when the person enters through the hole, he sees two shells of mass 2M/3 and point mass M/3. Thus the gravitational force acting on the person due to the point of mass of the shell is given as:

Now that we have gained the two energies that are one outside the planet and another inside the planets due to another shell-like structure, the net gravitational force acting on the person is the value of the second shell gravitational force subtracted from the first shell gravitational force.

Gravitational Potential V = -GM/R for hollow spherical shell at the centre. If we replace R by R/2 then we get V = -2GM/R. Therefore it decreases.

A conservative force is one for which the work done by the force in moving an object between two points is independent of the path taken. The gravitational force is an example of a conservative force since the work done by gravity in moving an object only depends on the initial and final positions, not the path taken. Frictional force, magnetic force, and tension force are non-conservative forces since the work done by these forces depends on the path taken.

If an equation fails this consistency test, it is proved wrong, but if it passes, it is not proved right.

Thus, a dimensionally correct equation need not be actually an exact (correct) equation, but a dimensionally wrong (incorrect) or inconsistent equation is definitely wrong.

There is no force which can balance the weight of m₁.  

The correct answer is Option 3, i.e., ‘mild’.
The word ‘acerbic’ means ‘to be critical or sarcastic in tone or mood.’ The word ‘mild’ has an opposite meaning of ‘gentle in tone’. Hence, the correct option is Option 3.

The word 'between' is used when two things or persons are being compared or depicted.
Example-I had to select between the two destinations for the vacation.
Thus, the statement should read as 'Kajal was sitting between Prachi and Isha at the party that night.'

An "ulterior motive" refers to a desire that is kept concealed by displaying some other cause.
Example- The ulterior motive of the conspirators was revealed during the investigation. 
Vendetta means to have a prolonged fight or unsolved issue with someone that hinders positive growth.
Propaganda is basically the spreading of news that is untrue, mostly done in order to fulfill political objectives.
Grudge means to have a constant feeling of ill will or resentment for someone/something resulting from a past insult or injury.
Ulterior motive stands for the hidden motive that is present in the things done in public sight. It can be compared to collusion.

संज्ञा या विशेषण से बनने वाली क्रिया को 'नाम धातु' कहते है। अन्य सभी विकल्प गलत है।

Key Points

Additional Information

विशेष:

सही उत्तर है - ‘अनिश्चयवाचक’।

• ‘कोई आदमी आया है’ - इस वाक्य में अनिश्यवाचक सार्वनामिक​ विशेषण है।
• यहाँ ‘कोई’ शब्द प्रयुक्त हुआ है। अतः ‘कोई’ शब्द अनिश्चयवाचक सार्वनामिक विशेषण की श्रेणी में आएगा।

Key Pointsअनिश्चयवाचक सार्वनामिक विशेषण​ :

जब वाक्य में संज्ञा से पहले ‘कोई’ और ‘कुछ’ जैसे सर्वनाम शब्द आते हैं एवं विशेषण की तरह संज्ञा शब्द की विशेषता बताते हैं,
तो हम इन्हें अनिश्चयवाचक सार्वनामिक विशेषण कहते हैं।
उदाहरण :

• मुझे कुछ चीज़ खानी है।
• कोई आदमी मुझे आता हुआ दिख रहा है।

Important Points

अन्य विकल्प :

​निश्चयवाचक सार्वनामिक विशेषण :

• यदि किसी वाक्य में संज्ञा से पहले 'यह' अथवा 'वह' सर्वनाम जुड़कर उसकी विशेषता बताए तो उन्हें निश्चयवाचक सार्वनामिक विशेषण कहते हैं।
  उदाहरण:
• यह पुस्तक मेरी है।
• वह लड़का है।

प्रश्नवाचक विशेषण :

• ऐसे शब्द जिनका संज्ञा या सर्वनाम में जानने के लिए प्रयोग होता है, जैसे कौन, क्या आदि वे शब्द प्रश्नवाचक विशेषण कहलाते हैं।
  उदाहरण:
• तुम कौन सी वस्तु के बारे में बात कर रहे हो?
• विकास के साथ कहाँ गए थे तुम?

संबंधवाचक विशेषण :

• जब विशेषण शब्दों का प्रयोग करके किसी एक वस्तु या व्यक्ति का संबंध दूसरी वस्तु या व्यक्ति के साथ बताया जाए, तो वह संबंधवाचक विशेषण कहलाता है।
  उदाहरण:
• ज्वालामुखियों की भीतरी सतह ज्यादा गरम होती है।
• पेट हमारे शरीर का अंदरूनी हिस्सा है।

Additional Information

• विशेषण की परिभाषा:
  • विशेषण संज्ञा या सर्वनाम के रूप गुण, संख्या, मात्रा, परिमाण, आदि के विशेषता बताते हैं।

हिंदी में विशेषण 4 प्रकार के होते हैं :-

• गुणवाचक विशेषण
• परिमाणवाचक विशेषण
• संख्यावाचक विशेषण
• सार्वनामिक विशेषण