WELCOME IN THE WORLD OF UNDERSTANDING

CLASS 10   Find the distance between (2,4) and (6,8)   Find the distance between (-3,2) and (-6,-3)   Write the law of reflection?   What is good fuel and write about its properties?   What is limitation and benefit of solar plate?   What is thermal power plant how it is work?   Find the focal length of lens which power is 2D.   Find the resistance of conductor if the current flowing through the conductor is 2A and voltage is 8V.   If object distance is 3 cm in concave mirror and image distance is 6 cm find the focal length position and nature of image?   Find the sum of first 8 multiple of 8   If sin A is 12/13 find all trigonometric ratio   If angle formed by radius of circle is 60 degree and the length of the radius is 7 cm find the area of sector?  Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number ...

  T here is a big news in the field of astronomy in India that India will launch its own space station on the space. This   announcement  has done by the ISRO chief K. Shivan that after the launch of "Chandrayaan-2" and "Gaganyaan" India will launch its own space station  in coming year  if India get this achievement  then India became the fourth nation having its own space station after Russia, America, and china. What is space station? D o to any experiment and research we must have a sophisticated  lab which must be full of required material and other facility but when we do any research in the space there must need of space station. Space station is nothing but like a lab of space which is located at 500-1200 km above the sea level. We can see the space station from the earth also. In space station the scientists goes form the earth and do the research in space station. They live there for some interval of days and understand the ...

CLASS 10 l  The angles of a triangle are x, y and 40°. The difference between the two angles x and y is 30°. Find x and y. l  Two years ago,Salim was thrice as old as his daughter and six years later,he will be four years older than twice her age. How old are they now? l  Two numbers are in the ratio 5 : 6. If 8 is subtracted from each of the numbers, the ratio becomes 4 : 5. Find the numbers. l  A two-digit number is obtained by either multiplying the sum of the digits by 8 and then subtracting 5 or by multiplying the difference of the digits by 16 and then adding 3. Find the number l  When you add two numbers and the number obtained by reversing the order of its digits is 165. If the both numbers differ by three, find the number. CLASS 9 l  The angles of a triangle are x, y and 40°. The difference between the two angles x and y is 30°. Find x and y. l  What is the freezing point of water in Fahrenheit and kelvin. l  ...

First photo released by isro on chandrayaan- 2  what is chandrayaan-2 ? It is a moon mission in which ISRO collect information from and about the moon. It will be done by India. chandrayaan-2 will launched from earth on 15 July 2019  It will help in collect information from the moon. The vehicle will move on moon surface and collect information form the moon . chandrayaan-1 was launched on 10 year before in 2008. what is moon? Moon is a satellite of earth.  which revolve around the earth. Moon revolve around the earth in 28 day. when sun,earth and moon come in same line respectively cause lunar eclipse. The surface of moon is very rough.  The first man who go on moon was Niles armstrong in 1969.    Moon have no its own light. Moon takes its light form the sun. Moon is very small competitively Earth.                                  ...

1. Organism make their food themself is called? 2. Why Marble tiles is cooler then wooden tiles ? 3. Why blanket make you warm in winter night? 4. Which factor will same when we change the quantities of substance ? 5. Why food make sooner in pressure cooker? 6. What is normal temperature of body in Celsius, Fahrenheit and kelvin? 7. Which metal is liquid at room temperature? 8. Why Mercury is used in thermometer? 9. When lunar eclipse occur ? 10. When solar eclipse occur ? 11. The product of neutralization reaction is always in which nature? 12. A substance change colour yellow to red when turmeric is added in it . Name the type of substance? 13. Boiling point of water at hills must be ? 14. Why rainbow form? 15. What is the temperature at the surface of sun? 16. Name the nearest planet to sun? 17. Which planet is the smallest planet of universe? 18. Which planet is largest planet of universe? 19. Why sharp blade help to cut vegetable easily? 20. Name the colour ...

1.  Name the device used to measured pressure? 2.  How pressure depend on depth? 3.  How many colour does the white light contains? 4.  Which part of eye maintain the focal length of and form image on retina? 5.  What is the SI unit of pressure ? 6.  Name the metal which can cut easily with knife? 7.  Name the non metal which is lustrous? 8.  Apple fall down due to which force? 9.  Why is not easy to walk on snow? 10.  Which mirror is used in ambulance? 11.  Which mirror is used in solar cooker? 12.  Which mirror is used as shaving mirror? 13.  Why food is not cook properly on hills ? 14.  Two body attract as well repel sometime. Which type of force is act on it ? 15.  Name the nonmetal which is good conductor of electricity? 16.  Which metal is the best conductor of electricity? 17.  Which metal is the best reflector? 18.  Light year is the SI unit of whi...

CLASS 10 1. What area covered by minute hand of length 21 cm swipe in 40 minute. 2. The radius of a circle whose circumference is equal to the sum of the circumferences of the two circles of diameters 36cm and 20 cm is 3. The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is? 4. Find the area of a sector of circle of radius 21 cm and central angle 120° The wheel of a motor cycle is of radius 35 cm. 5. How many revolutions per minute must the wheel make so as to keep a speed of 66 km/h? 6. Find the area of the minor segment of a circle of radius 14 cm, when the angle of the corresponding sector is 60° A circular park is surrounded by a road 21 m wide. If the radius of the park is 105 m, find the area of the road. CLASS 9 Define the following 1) uniform motion 2)acceleration 3) force 4) first, second and third law of motion Prove that sum of all angle of triangle is 180 0 Find the value of value of angle ...

we are live on the wonderful planet of the solar system that is our Earth but due to our own benefit and tremendous expectation we are devastating our earth environment which is now very dangerous for us because we play important role to destroy the earth we celebrate world Environment day  on 5 June every year. In recent year our economics grow to much and our expectation too. so, to fulfill our dreams we are using the resource and now the condition is very dangerous. A large section of society take breathe in unhealthy atmosphere there several step also taken by our government of clean the environment but there are no any political leadership who have vow to do something to clean environment . World environment day is now the question of general knowledge which is remember by the student to pass the examination today is day when we introspects and do something to change this earth. Step must be take to save and clean the environment. Don't use plastic and when ever ...

CLASS 10 Find the sum of the multiple of 5 upto 15 th  term In an AP if a = 1, an = 20 and Sn = 399, then n is ? If the common difference of an AP is 5, then what is a 18  - a 13 ? Is 0 a term of the AP: 31, 28, 25, ...? Justify your answer. The 26th, 11th and the last term of an AP are 0, 3 and -1/5 , respectively. Find the common difference and the number of terms The sum of the 5th and the 7th terms of an AP is 52 and the 10th term is 46. Find the AP. Find the 20th term of the AP whose 7th term is 24 less than the 11th term, first term being 12 Which term of the AP: 53, 48, 43,... is the first negative term? CLASS 9  Multiply the following (a+b+c)(a+b+c) Convert 108 km/h into m/s Write a short notes on tissue. What is the effect of force. Define the following :1) speed, 2)velocity 3) scalar quantities 4)vector quantities 5)displacement CLASS 8  Find the angle of triangle if the angle in ratio A:B:C = 2:3:4 If the sum ...