Welcome students I presume you have gone through the videos on the YouTube and now you are ready to get the assignments in this case we are assignments based on the questions which have been asked in the previous years.
This is the first textual information given to you of dimensional analysis. As I have discussed in my video of dimensional analysis, this chapter is not important for one question every year, but it helps to eliminate options and help in questions solving as well. And hence we cannot take the topic easily. . Next thing you must try to understand that remembering certain dimensions by heart to save the timings. These are gravitational constant G viscosity Planck’s Constant, Surface tension Young’s modulus etc. Remembering these dimensions in solving the questions in the examination in a shorter interval of time we have various aspects on question here
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We will discuss one by one question which are to come in examination. Firstly question come where you have to find the formula straight away. questions are discussed in videos as well. Secondly we have to find the dimensions with variation in standard dimension. for example velocity depends on force volume how are they related. Such questions were very very common 4 years back.
Then finding the errors, the errors are also very important aspect nearby you should remember methods for finding absolute error, relative and percentage error. Next we understand absolute errors are added in addition and subtraction. Relative errors are added in division and multiplication.
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Then we come across significant figures in multiplication, division and addition. It is to be noted that in addition and subtraction the final answer as many points after the decimal as the least decimal in the quantity multiplication division should be rounded off to the least significant numbers value
The newly appointed National testing agency or NTA has finalized paper pattern for NEET and JEE now it has confirmed that they weightage for class 11th will be 50% and for class 12th also 50%.
We have given you 3 videos one with the basics of dimensional analysis, second with some more basic concepts and application and third one with a previous years questions. In previous papers we see that no question is of 2018 what other questions 2015 to 2018 are solved there. Now in the assignment what is being given to you we are giving you question of recent years only. And solution is on the next page you are hereby the first try to solve the question yourself, if problem persists see the solution. If you have done the question yourself you can be very well sure that you are in tune this particular topic I hope this assignment will help you getting your this topic also we will start the basis of kinematics next video assignments. Mean time write on my if you require more questions. I will be more than happy assist you in this. Thank you and all the best.
LIST of quantities with same dimensions
Speed and velocity
Energy and work and moment of force
Pressure and stress and Young’s modulus
Impulse and momentum
Weight and force and upthrust
Electric resistance and impedance
Density and molar concentration
Surfaces tension and stiffness
Distance, displacement and amplitude
Potential difference and EMF
Decay constant and frequency
Work and Torque
Stress and pressure
Surface tension and Surface energy
Velocity gradient and frequency
Refractive index and strain
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