Physics Numericals

Physics is frequently regarded as one of the most hated disciplines among students. However, if approached correctly, it may quickly become one of the most straightforward and entertaining subjects. Physics can not only help you get good grades, but it can also spark a lifelong interest in science. As a result, when studying a conceptual subject like physics, it is critical that the student take the proper approach.

Every aspect of our lives is actually guided by a physical law or notion. Physics is considered to be able to explain everything from the beginning of the cosmos to current living. Students in class 11 are introduced to some fundamental physics ideas and laws. We’ll go over key topics including units of measurement, motion in a plane and straight line, gravitational force, and kinetic energy, among others. In competitive exams, physics is given equal weight. Physical World is a chapter that covers the fundamentals of science, mathematics, natural sciences, forces, physics, and their influence and applications. The notes for Physics Class 11 Chapter 1 contain all of the major subjects stated. It provides pupils with a rudimentary understanding of the history and the evolution of physical rules.

With the advent of the internet we can get as many as numericals from what we want to practice. The main focus of an individual should be practicing as much as he can so that in exam he will not be worried about questions. Physics should deal with real world examples and make it easier to understand.

HOW TO SOLVE PHYSICS CLASS 11 NUMERICALS

The numericals in physics class 11 are difficult, however you should begin with the theory and then go on to the numericals once you have completed the theory. The book I recommend you solve is HC Verma. You can also get aid from YouTube, which has a variety of videos that can assist you with your numericals. 

It should be practised. Any question will be easy for you if you solve more than 200 questions from each chapter. It may appear pointless to practise, but on an exam, you will be able to see answers simply by looking, so don’t be alarmed if it appears difficult.

If you’re talking about iit coaching, you’ll have to do the same thing but with more questions and while it may seem pointless for two years, you’ll find it very useful in your jee mains and test.

Don’t worry, if you just practise, I assure you won’t be afraid.

I’d like to provide you a few pointers without wasting any time:

1. Make sure you understand the fundamentals and write down all of the formulas separately.

2. Basic formulas should be readily available.

3. Begin by working through the NCERT examples.

NUMERICALS

Question 1. A cube with a side of 1 centimetre has a volume of m3

A solid cylinder with a radius of 2.0 cm and a height of 10.0 cm has a surface area of (mm)2

A vehicle travelling at 18 km/h-1 covers….m in 1 second.

Lead relative density of 11.3. It has a density of g cm-3 or kg m-3.

Answer: 1 cm =1100m

 Volume of the cube = 1 cm3

But, 1 cm3 = 1 cm × 1 cm × 1 cm =1100m×(1100)m×(1100)m

∴1 cm3= 10-6 m3

Hence, the volume of a cube of side 1 cm is equal to 10-6 m3

The total surface area of a cylinder of radius r and height h is S = 2πr (r + h)

Given that, r = 2 cm = 2 × 1 cm = 2 × 10 mm = 20 mm h = 10 cm = 10 × 10 mm = 100 mm

∴s=2×3.14×20×(20×100)= 15072 =  1.5×104 mm3

Using the conversion,

 1 km/h =518m/s

18km/h=18×518=5 m/s

Therefore, we can get distance by using relation

 Distance = Speed × Time = 5 × 1 = 5 m

 Hence, the vehicle covers 5 m in 1 s.

 Relative density of a substance is given by the relation,

Relative density =density of substancedensity of water

Density of water = 1 g/cm3

Density of lead= relative density of lead×density of water

=11.31=11.3 g/cm3

Again, 1g =11000kg

1 cm3= 10-6 m3

Chapter 1 Solutions for Class 11 Physics Physical World can help you study more extensively and achieve exceptional results on your first-term exams and tests. Students can begin practising NCERT Solutions Class 11 Physics right away, which will result in immeasurable results in their future studies. As a result, you’ll have a firm grasp on the first phrase’s syllabus.

We shall be going over the things and materials from around the planet, where the principles of Physics are being enforced by nature, according to NCERT Solutions for Class 11 Physics Chapter 1.

CONCLUSION

We learnt about what should be the approach of an individual while solving numericals and problems of physics of class 11. One should be prepared to practise as much as he can. More no. of questions he will do in practice, better are the chances of him solving his real exam question paper.