Maharashtra State Board
- c. Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity? Kepler's first law: The orbit of a planet is an ellipse with the Sun at one of the foci. Kepler's Second law: The line joining the planet an... 2
- b What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force ? (i) Free Fall: Whenever an object moves under the influence of the force of gravity alone, it is said to be in Free Fall. During free fall i... 1
- a. What is the difference between mass and weight of an object. Mass is the amount of matter present in an organism while weight of an object is mass along with gravitational force I. e. W=Mg. Mass of an... 1
- 1. study the entries in the following table and rewrite them putting the corrected items in a single row Answer: 123 MasskgMeasure of inertia WeightNZero at the centre (of the earth) Acceleration due to gravitym/s²Depends on height Gravitational... 1
- Lesson no1 field visit geography Maharashtra board Lesson no 1 maharashtra board Geography Field Visit NOtes (1) Make a report on your field visit (2) Prepare a questionnaire for a field visi... 1
- (5) Outline the importance of field-visit. Field visit helps in developing geographical concepts, elements and processes through direct personal experiences. It helps in understanding... 1
- (4) What items will you take with you for the field visit? I will take the following items with me for the field visit: Notebook, pen, pencil, camera, binoculars, etc to collect information. I-card,... 1
- (3) How will you manage the litter during the field visit? We will collect all the litter of the in-between journey in a carry bag and will throw them in a dustbin available inbetween or at destinati... 1
- (2) Prepare a questionnaire for a field visit to a factory. A questionnaire for a field visit to a factory will be as follows: Which product is manufactured in the factory? What are the raw materials... 2
- (1) Make a report on your field visit We started our trip from Naldurg towards Alibag. Our station was Solapur. We critically observed the places on the basis of 1. Relief 2. Veg... 1
- In the adjoining figure, ∠QPR = 90°, seg PM ⊥ seg QR and Q – M – R, PM = 10, QM = 8, find QR. In ∆PQR, ∠QPR = 90° and [Given] seg PM ⊥ seg QR ∴ PM² = OM × MR [by Theorem of geometric mean] ∴ 10² = 8 × MR ∴ MR = 100over8 = 12.5 Now, QR... 1
- In ∆PQR, point S is the midpoint of side QR. If PQ = 11, PR = 17, PS = 13, find QR. In ∆PQR, point S is the midpoint of side QR. [Given] ∴ seg PS is the median. ∴ PQ² + PR² = 2 PS² + 2 SR² [Apollonius theorem] ∴ 11² + 17² =... 1
- Identify, with reason, which of the following are Pythagorean triplets. i. (3,5,4) Here, 5² = 25 3² + 4² = 9 + 16 = 25 ∴ 5² = 3² + 4² The square of the largest number is equal to the sum of the squares of the oth... 1
- In the given figure, if LK = 6√3 find MK, ML, KN, MN and the perimeter of MNKL Solution:: In triangle space LKM , tan30^∘ =MLover LK ⇒ ML=6√( 3 ) × 1 / √( 3 ) =6 cos 30 ^(°) = LK / MK ⇒ MK=dfrac LK cos 30 ^(°) = 6√( 3 )... 1
- Walls of two buildings on either side of a street are parallel to each other. A ladder 5.8 m long is placed Solution:: Correct answer is 8.2 m Video solution https://youtu.be/WmtS_3V0VKQ 1
- A ladder 25m long just reaches the top of a building 24m Given: length of ladder= 25 m building height=24 m By pythagoras theorem , x²=25² -24² =625-576 x²=49 x= 7 Hence the answer is 7 m https://y... 1
- Find the diagonal of a rectangle whose lengths of sides is 8cm and 15cm. The length of diagonal is 17 cm 1
- A boat travels 16 km upstream and 24 km downstream in 6 hours. speed of the boat in still water is 8 km/hr. and speed of water current is 4 km/hr. 1
- Decide whether the following sequence is an A.P. , if so find the 20th term of the progression -12,-5,2,9,16 Correct answer is 121 2
- Places A and B are 30 km apart and they are on a straight road. Hamid travels from A to B on bike. At Speed of Hamid is 50km/hr and of Joseph is 40km/hr 1
- Two numbers differ by 3. The sum of twice the smaller number and thrice the greater number is 19. Find the numbers. hence, the two numbers are 5 and 2 Video solution https://youtu.be/1qCuzBxRJ40 1
- (1) Complete the following activity to solve the simultaneous equations. Solution: 3, -2 1
- P. Perform each of the following calculations. Round off your answers to two digits Refer below image for detailed solution 2
- Q. Perform each of the following calculations. Round off your answers to three digits. Solution:: 5.02×10¹⁰ , 2