EMRS PGT Test: Computer Science Mock Test - 3 Free Online Test 2026

The focal length of a plane mirror is infinity. A plane mirror can be considered as a spherical mirror of infinite radius of curvature. Focal length is half of the radius of curvature and hence it is infinity.

This equation explains the behaviour of real gases with great accuracy and also the deviations of gas laws from ideal behaviour. The equation was proposed in the year 1873. It was a first step towards taking into account interaction forces which are acting between real gases molecules.

Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or grey in colour, depending on their mineralogy.

Saturated carbon compounds can form Straight and Branched types of chain structures.

• Saturated hydrocarbons are hydrocarbons that contain only single bonds between carbon atoms.
• Each carbon atom is bonded to as many hydrogen atoms as possible.

Every one degree shift of longitude corresponds to 4 minute time difference.

So a time difference of 1 hour (60 minute) will have:

1 degree = 4 minutes

So, 60/4 = 15 and 15 × 1° = 15°

Now for 2 hours (120 min)

1 degree = 4 minutes

120/4 = 30 and 30 × 1° = 30°

So a time lag of 2 hours corresponds to 30 degrees of longitudinal change.

This follows from a simple fact that 360∘ ⇒ 24 hour.

Which is same as 360° ⇒ 1440 min. So 1° ⇒ 1440360 = 4 minutes.

Since all the harmoniums are instruments and all instruments are flutes, then flutes include instruments and harmoniums. And instruments include harmoniums.
(i) All flutes cannot be instruments, because instruments are flutes, but flutes can contain something else as well.
(ii) All the harmoniums are flutes because harmoniums are instruments and instruments are flutes.

Rahul’s position 14th from front
John’s Position 17th from last 
Alisha is between them


People between them 48 – (14+17) = 17
Where the midmost is Alisha 
So she has 8 people on either of her side.

So Option A is correct

According to the question,
B > D
A and C > E
∴ B > D > A and C > E
Clearly, shortest = E

So Option A is correct

• Extreme left = heaviest person (must be the one not named among A, B, C, D).

• D is second from right → D sits in the 4th place from the left (positions left→right: 1,2,3,4,5; D = position 4).

• “A is sitting to left of B” is interpreted as A immediately left of B. The only adjacent seats available (given position 1 and 4 are fixed) are positions 2 and 3, so A = position 2 and B = position 3.

• That leaves C at position 5 (rightmost).

• 4th from right = position 2 (since counting from right: 1→pos5, 2→pos4, 3→pos3, 4→pos2). Position 2 is A.

• Left → Right (positions 1 to 5):

• Heaviest (unnamed), A, B, D, C

As fast mode of 'Walk' is 'Run' in the same way fast mode of 'Breeze' is 'Wind'.

As 'smoke' leads to 'pollution' in the same way ''War'' leads to 'destruction'.

As there is 1 odd day in 1900 years
In 49 years from 1900 to 1949, there are 49 ÷ 4 = 12 leap years and 37 ordinary years. There are (12 × 2 = 24) + 37 = 61 odd days or 5 odd days
From 1st January, 1950 till 26th January, 1950, there are 5 odd days
So, in total there are 0 + 1 + 5 + 5 = 11 odd days or 4 odd days
Hence, From 1st January, 1600 till 26th January, 1950, there are 4 odd days
So 26th January 1950 is Thursday.

C is the correct option.In the given coded word each constant is substituted by preceding constant and each vowel is also substituted by preceding vowel. Hence, SCHOOL will be codes as RBGIIK.

The clinical method is a systematic approach used in psychology and child development to gather information about an individual's behavior and development. It involves several steps, including the preparation of case history, the study of the environment, and direct observation of the child. However, self-analysis by the child is not a part of the clinical method. Here is a detailed explanation of each of the options:
A. Preparation of case history: This step involves gathering information about the child's background, including their family history, medical history, and any previous assessments or interventions. It helps in understanding the child's context and identifying any potential factors that may influence their development.
B. Study of environment: This step focuses on examining the child's immediate environment, such as their home, school, and social interactions. It helps in understanding how the child's environment may impact their behavior and development.
C. Direct observation of the child: This step involves observing the child's behavior in various settings, such as at home, school, or during play. It helps in gathering firsthand information about the child's behavior, strengths, weaknesses, and developmental milestones.
D. Self-analysis by the child: This option is not a part of the clinical method. Self-analysis typically involves individuals reflecting on their own thoughts, feelings, and behaviors. While self-reflection can be a valuable tool for self-awareness and personal growth, it is not a systematic method used in clinical assessments.

Clinical Method
The clinical method is characterized by various elements, including confidential recording, scientific synthesis, and occupational therapy. Let's discuss each of these characteristics in detail:

1. Confidential Recording: In the clinical method, professionals maintain a confidential record of the patient's information, observations, assessments, and treatment plans. This record helps in tracking the progress of the patient over time and ensures privacy and confidentiality.
2. Scientific Synthesis: The clinical method emphasizes the use of scientific principles and evidence-based practices to guide assessment, diagnosis, and treatment. It involves synthesizing information from various sources, such as patient interviews, medical history, assessments, and research literature, to arrive at an accurate understanding of the patient's condition and provide effective interventions.
3. Occupational Therapy: Occupational therapy is a key component of the clinical method. It focuses on assisting individuals in achieving their maximum level of independence and functioning in their daily activities. Occupational therapists use various therapeutic techniques, exercises, and interventions to help patients regain or enhance their physical, cognitive, and emotional abilities to engage in meaningful occupations.

Dr. JL Moreno developed the sociometric technique. This technique focuses on the study of interpersonal relationships within a group. It aims to understand the patterns of social interactions and the social structure that emerges within a group. Sociometry involves the use of surveys and questionnaires to gather data about social relationships, preferences, and connections among group members.
Here is a detailed explanation of the sociometric technique developed by Dr. JL Moreno:

1. Definition: Sociometry is a method of measuring social relationships and interactions within a group setting. It provides a quantitative analysis of social connections, preferences, and patterns of interaction among group members.
2. Purpose: The primary purpose of sociometry is to gain insights into the social structure and dynamics of a group. It helps identify key individuals within the group, determine social roles, assess group cohesion, and understand communication patterns.
3. Procedure: The sociometric technique involves the following steps:
   1. Designing a survey: A survey or questionnaire is designed to collect data on social relationships. The questions typically inquire about preferences for interacting with specific individuals, friendship choices, or perceptions of group members.
   2. Data collection: The survey is administered to group members, who provide their responses based on their social preferences and perceptions. This data is collected and recorded for further analysis.
   3. Data analysis: The collected data is analyzed using sociometric methods. Various statistical techniques are applied to identify patterns and relationships within the group. Measures such as sociograms (visual representation of social connections) and sociometric indices (quantitative measures of social status) are used to interpret the data.
   4. Interpretation: The results of the sociometric analysis are interpreted to gain insights into the social dynamics of the group. This includes identifying popular and isolated individuals, subgroups, communication patterns, and overall group cohesion.
4. Applications: The sociometric technique has various applications in different fields:
   1. Education: Sociometry can be used in schools to understand peer relationships, social integration, and identify potential social issues or conflicts among students.
   2. Organizational Psychology: Sociometry is useful for analyzing workplace dynamics, team building, and improving communication and collaboration within organizations.
   3. Therapeutic Settings: Sociometric techniques are employed in therapy sessions to explore interpersonal relationships, group dynamics, and enhance social skills.
   4. Market Research: Sociometry can be applied to understand consumer preferences, social influence, and identify opinion leaders within target markets.

Correlational Method
The psychologist in this scenario is using the correlational method to study the individuals and compare the jobs they were employed in. The correlational method is a research technique used to examine the relationship between two or more variables.

1. Correlational Method: The correlational method involves studying the relationship or association between two variables without manipulating them. It aims to determine whether a relationship exists between variables and the strength and direction of that relationship.
2. Studying Individuals: In this case, the psychologist is studying individuals, which means they are examining the characteristics, behaviors, or other factors related to each person. The focus is on understanding the relationship between the individuals' job choices and their other characteristics or behaviors.
3. Comparison of Jobs: The psychologist is specifically comparing the jobs in which the individuals are employed. They might be interested in understanding how different factors, such as personality traits, education level, or socioeconomic status, influence the types of jobs people choose.
4. Variable Comparison: The psychologist will collect data on the individuals' job titles, industries, or other relevant information related to their employment. This data will be used to compare the job variables across the individuals in the study.
5. Quantitative Analysis: To determine the relationship between the variables, the psychologist will analyze the data using statistical techniques. They may use techniques like correlation analysis to measure the strength and direction of the relationship between variables.
6. Interpretation of Results: Based on the analysis, the psychologist will interpret the results and draw conclusions about the relationship between the individuals and the jobs they are employed in. They may find positive correlations, negative correlations, or no significant relationship between the variables.

According to K Young (1947), the needs occurring due to processes taking place in the body, stimulation by external projects, and expression of feelings are included as needs. However, adventurous activities are not mentioned as one of the needs.
Below is the breakdown of the answer in HTML bullet points:

• Needs included by K Young (1947):
  • Processes taking place in the body
  • Stimulation by external projects
  • Expression of feelings
• Need not included by K Young (1947):
  •  Adventurous activities

NEP 2020 suggests a flexible undergraduate education system with a duration of 3 or 4 years, depending on the choices made by students.

'A strenuous situation' is one which is difficult and requires a lot of hard work to be completed or tackled. 
Thus, option 3 is the correct answer. 
Example- A lot of strenuous work was required to drill the tunnel across the Ladakh valley.

सही उत्तर है - ‘व्यष्टि’।

• समष्टि का विलोम व्यष्टि होगा।
• समष्टि का अर्थ : सामूहिकता।
• व्यष्टि का अर्थ : समष्टि का सदस्य या व्यक्ति।

Key Pointsअन्य विकल्प:

• अस्ति का विलोम : नास्ति।
• विशिष्ट का विलोम : साधारण।
• अशिष्ट का विलोम : शिष्ट।

Additional Information

• किसी शब्द का विलोम शब्द उस शब्द के अर्थ से उल्टा या विपरीत अर्थ वाला होता है।

विलोम शब्द के उदाहरण:-

• कृतज्ञ - कृतघ्न
• तुच्छ - महान्
• प्रगतिशील - प्रतिगामी
• देव - दानव

दिए गए विकल्पों में सही उत्तर विकल्प 4 ‘पूर्वकालिक क्रिया’ होगा। अन्य विकल्प इसके असंगत उत्तर हैं। Key Points

• इसका सही उत्तर ‘पूर्वकालिक क्रिया’ है।
• मुख्य क्रिया से पहले होने वाली क्रिया को पूर्वकालिक क्रिया कहते हैं। जैसे - पंकज पढ़कर सो गया।
• आप देख सकते हैं कि उपरोक्त वाक्य में दो क्रियाएँ एक साथ प्रयुक्त हुई हैं, जिसमें एक क्रिया दूसरी क्रिया से पहले खत्म हुई है।
• वाक्य के अनुसार राजू द्वारा पहले पढ़ने का कार्य पूर्ण किया गया है और उसके बाद वह सो गया।
• अतः इस वाक्य में पढ़कर पूर्वकालिक क्रिया होगी और यह वाक्य पूर्वकालिक क्रिया का उदाहरण होगा।

अन्य विकल्प:

Additional Information

क्रिया- जहां किसी कार्य के करने या होने का बोध हो, क्रिया कहलाता है। जैसे- मोहन जाता है।, वह खाना खाता है। आदि।

रचना की दृष्टि से क्रिया के दो भेद होते हैं-

The sentence seems to say that the person in concern was expecting a surprise on his birthday and not accepting it. Expect means to want or wish for something whereas accepting means to receive or recognize some issue.
Thus option 2 is correct.

• राजभवन‍ का विग्रह ‘राजा का भवन’ होगा।
• राजभवन शब्द में तत्पुरुष समास है।

Key Pointsतत्पुरुष समास​ :

• तत्पुरुष समास वह होता है, जिसमें उत्तरपद प्रधान होता है, अर्थात प्रथम पद गौण होता है एवं उत्तर पद की प्रधानता होती है व समास करते वक़्त बीच की विभक्ति का लोप हो जाता है।
• इस समास में आने वाले कारक चिन्हों को, से, के लिए, से, का/के/की, में, पर आदि का लोप होता है।

उदाहरण :

• ग्रामवासी शब्द का विग्रह : ग्राम का निवासी।
• धर्मग्रंथ शब्द का विग्रह : धर्म का ग्रंथ।
• मांसाहारी शब्द का विग्रह : मांस को खाने वाला।

Additional Information

समास:- समास उस प्रक्रिया को कहते हैं, जिसमें दो शब्द मिलाकर उनके बीच के संबंधसूचक आदि का लोप करके नया शब्द बनाया जाता है।
समास के माध्यम से कम शब्दों में अधिक अर्थ प्रकट किया जाता है।
जैसे - युद्धभूमि - युद्ध के लिए भूमि।

• समास के छः प्रकार हैं।
  • अव्ययीभाव समास
  • सतत्पुरुष समास
  • कर्मधारय समास
  • द्विगु समास
  • द्वन्द समास
  • बहुव्रीहि समास

In the sentence, we are being told that Sir Surendranath is the greatest Indian orator. The given sentence expresses this in comparative degree. Therefore, the correct answer is 'greater'.