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Daily Practice Problems
Class 11 Physics
Units and Measurement
daily practice problem

Question 1.

What do you understand by the ‘Fundamental units’ and ‘Derived units’?

 

Question 2.

Name different systems of units for measurement.

 

Question 3.

What is the parallax method? Explain.

 

Question 4.

How many metres in 2 light years?

 

Question 5.

Fill in the blanks:

  1. 1 fermi = _ m.
  2. 1 astronomical unit = _m.
  3. 1 angstrom = _m.
  4. 1 parsec = _m.

 

Question 6.

What do you understand by the unified atomic mass unit (u)?

 

Question 7.

Define the terms: accuracy and precision.

 

Question 8.

Differentiate between systematic errors and random errors.

 

Question 9.

What do you understand by ‘Least count error’?

 

Question 10.

What do you understand by the terms ‘Absolute error’, ‘Relative error’ and ‘Percentage error’?

 

Question 11.

The resistance R=V/I, where V= (100±4) V and I= (100±3) A. Find the percentage error in R.

 

Question 12.

The length and breadth of a rectangular park is 3.21 m. and 4.278 m. respectively. What is the area of that park to appropriate significant figures?

 

Question 13.

How do you define ‘the dimensions of the quantity’? Write down the dimensional formula for work and force.

 

Question 14.

State the number of significant figures in the following:

  1. 0.0008 m2.
  2. 3.19×1035kg.

 

Question 15.

A physical quantity A is related to four observables p, q, r and s as follows:

A = p4q2r3/s3

The percentage errors of measurement in p, q, r, s is 2%, 4%, 1% and 3% respectively. What is the percentage error in the quantity A?

 

Question 16.

There are two boxes of masses 30.17 g. and 3.20 kg. respectively. Give the total mass of these two boxes to the correct significant figures.

 

Question 17.

The third equation of motion is: v2=u2+2as.

Check if it is dimensionally correct or not.

 

Question 18.

Write down the dimensional formula for Volume, Speed and Mass Density.

 

Question 19.

What are the seven base quantities? Make a table for their name and symbols.

 

Question 20.

Is ‘amount of substance’ a fundamental quantity? Define it. What is its symbol?
 

Question 21.

The period of oscillation of a simple pendulum is T=2∏√L/√g. Measured value of L is 25.0cm. known to 1mm. accuracy and time for 100 oscillations of the pendulum is found to be 80 sec. using a wrist watch of 1s resolution. What is the accuracy in the determination of g?

 

Question 22.

Each side of a cube is measured to be 6.534m. What are the total surface area and the volume of the cube to appropriate significant figures?

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Problem-solving on Class 11 Physics Units and Measurement NCERT Chapter 1 after learning a theoretical concept is crucial for several reasons:

  1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 11 Physics Units and Measurement you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
  2. Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 11 Physics Units and Measurement NCERT Chapter 1, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
  3. Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
  4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Units and Measurement Class 11 Physics in practical scenarios helps you remember them better than passive reading or memorization.
  5. Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Units and Measurement Class 11 Physics Notes on LearnoHub.com
  6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Units and Measurement. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
  7. Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Units and Measurement Class 11 Physics Online Tests at LearnoHub.com.
  8. Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
  9. Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
  10. Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE Units and Measurement Class 11 Physics is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 11 Physics Units and Measurement NCERT Chapter 1

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 11 Physics Units and Measurement NCERT Chapter 1 useful.

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