तुम कितनी सुन्दर हो! Compliment or Complement? | CBSE Class 7 | Radhika Ma'am #shorts

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

Magnetic potential at a point due to a short magnetic dipole of moment 2 Am^(2) at a distance of 100 cm along a line making an angle of 60^(@) with the axis is (mu_(0)=4pixx10^(-7)Wb//Am)

Below there is a conversation between a teacher and student of class 3rd on the topic Air Teacher:What will happen if there is unclean or polluted air in the whole world Student I:Ma'am will not get proper oxygen to breathe in StudentII:There will be no animals ,insectes etc Teacher:So what we will do? Student III:Ma'am for fresh air we have to plant more or more trees and stop using personal vehicle for traveling this interaction shows that students are good in

What is the magnetic induction due to a short bar magnet of moment of 0.5 Am^(2) at a point along its axis at a distance of 20 cm from the centre of the magnet? (mu_(0)/(4pi)=10^(-7)" SI unit")

In a class test (+ 3) marks are given for every correct answer and (–2) marks are given for every incorrect answer and no marks for not attempting any question. (i) Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly? (ii) Mohini scores –5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly? (iii) Rakesh scores 18 marks by attempting 16 questions. How many questions has he attempted correctly and how many has he attempted incorrectly

Solve the following: (a) The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. What is the lowest score? (b) In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember, the sum of three angles of a triangle is 180°). (c) Smita’s mother is 34 years old. Two years from now mother’s age will be 4 times Smita’s present age. What is Smita’s present age? (d) Sachin scored twice as many runs as Rahul. Together, their runs fell two short of a double century. How many runs did each one score?