A planet of radius R has an acceleration due to gravity of ๐‘”_๐‘  on its surface . A deep smooth tunnel is dug on this planet , radially inward , to reach a point P located at a distance of ๐‘…/2 from the centre of the planet . Assume that the planet has uniform density . the kinetic energy required to be given to a small body of mass m , projected radially outward from P , sop that it gains a maximum altitude equal to the thrice the radius of the planet from its surface is equal to 63/16m๐‘”_๐‘ R 3/8m๐‘”_๐‘ R 9/8m๐‘”_๐‘ R 21/8m๐‘”_๐‘ R

NXT INDIA 
ROHAN SIR 
SOLUTION WILL UPLOADED 

Comments

Post a Comment

Next topper institute

class 10 ohm's law

Image
class 10 video  what ohm's law? Ohm’s Law states that the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and other physical conditions remain unchanged. Mathematically it can be represented as, objective question based on electric current open this link for objective    https://nexttopperinstitute.blogspot.com/2020/07/class-10th-objective-questions-on.html   Class 10       HOW TO ORGANISM REPRODUCE Question. 1(i) What is fertilisation? Distinguish between external fertilisation and internal fertilisation. (ii) What is the site of fertilisation in human beings? Answer. (i) Fertilisation is defined as the fusion of a male gamete (sperm) with a female gamete (an ovum or egg) to form a zygote during sexual reproduction. (ii) The site of fertilisation in human beings is in the fallopian tube of female reproductive system. Question.2 Define th...
WE COME TO NXT WEB

error analysis objective questions dpp

NEXT TOPPER INSTITUTE  FOR YOU  1.     In an experiment the percentage of error occurred in the measurement of physical quantities A,B,C and D   are 1% ,2%, 3% and 4% respectively . then the maximum percentage of error in the measurement x where x =A 2 B 1/2 /c 1/3 D 3 will be                                             NEET 2019 a.      10%                b. 3/13%                c.   -10%                                d. 16% 2.   ...
WE COME TO NXT WEB

Kirchhoff law problem and equivalent resistance

Image
1. using Kirchhoff law find the current in following branch answer     AB:(5/8) A, CA: (5/2) A, DEB: (15/8) A AD: (15/8) A, CD: 0 A, BC: (5/2) A 2.  using Kirchhoff law find the current in following branch   Answer  current in branch AB= (4/17) A In branch BC = (6/17) A In branch CD = (4/17) A In branch AD= (6/17) A In branch BD = (-2/17) A Total Current =(4/17) +(6/17)+(-4/17)+(6/17)+(-2/17)=(10/17) A 4. find R Equivalent 
WE COME TO NXT WEB

class 12 chapter 3 current questions

Image
1.   Calculate i 1 , i 2 , i 3 2.   Calculate current in each branch  Using Kirchhoff’s rules                                           cbse 2017      3. calculate the current through the 40 ฮฉ and 20 ฮฉ resistors in the following circuit : Using Kirchhoff’s rules, cbse 2019  4.
WE COME TO NXT WEB

current chapter 3 class 12 objective dpp2

please comments your answer for matching    NEXT TOPPER INSTITUTE  เคนเคฎ เค†เคชเค•े เคธเคชเคจो เค•ो เคธाเค•ाเคฐ  เค•เคฐेंเค—े 1.     A wire of length 6 m and area of cross section 1 m m  2 carries a current of 2 A. if unit cubic meter of the material of a wire contains 10 29        free electrons ,find the average time taken by an electron to cross the length of wire . 16 hr            b. 13.33 hr           c. 14.44 hr                      d. 17 hr 2.     The number of density of electrons in coppers is 8.5 x 10  28  m -3 . What is the time taken by an electron to drift from one end of the wire 2.2 m long to its other end if area of cross section of the wire is 2.0 x 10 -6  m  2 and it is carryin...
WE COME TO NXT WEB

class 10 chapter 10 cbse previous year all question

1.     NEXT TOPPER INSTITUTE เคนเคฎ เค†เคชเค•े เคธเคชเคจो เค•ो เคธाเค•ाเคฐ เค•เคฐेंเค—े   An object 3.0 cm high is placed perpendicular to the principal axis of a concave lens of focal length 30 . the image is formed at a distance of 10.cm from the lens calculate   distance at which object is placed ,size and nature of image formed . 2.     A concave lens has focal length of 20 cm .at what distance from the lens ,a 5  cm tall object be placed so that it formed an image at 15 cm from the lens . also calculate the size of the image formed ? 3.     Find the power of a concave lens of focal length 2 m. 4.     An object of height 5  cm is placed perpendicular to the principal axis of a concave lens of focal length 10 cm. if the distance of the object from the optical center  of the lens is 20 cm determine the position ,nature and size of the image formed using the lens formula . 5.     The image of an object formed by a...
WE COME TO NXT WEB

current objective question for cbse, jee , neet class12 chapter 3

Image
NEXT TOP PER INSTITUTE Dpp current questions 1.      1.  How many electrons per second flow through the cross sectional of a conductor so that the conductor carries a current of 1 ampere? a.      6.00 x 10 16 /sec       b.       6.00 x 10 17 /sec          c.        6.00 x 10 19 /sec     d.  6.25 x 10 18 /sec .       2.     2.   In a discharge tube the number of hydrogen ions drifting across a cross section per second is 1.0 X 10 18 , while the number of electrons drifting in opposite direction across that of cross section is 2.7 x 10 18  per second . calculate the total current crossing the given cross section . a.        0.6 A                        ...
WE COME TO NXT WEB

Motilal nehru public school jind class 9th dpp 1 Newton's law of motion all level question

Image
please download in pdf  click here  ๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡๐Ÿ‘‡ https://knowingonline.in/2020/07/27/class-ix-newtons-law-of-motion/ Question 1. Deduce Newton’s first law from the second law. Question 2. When small boy is trying to push a heavy stone, mention various forces acting on the stone. Question 3. Describe in brief an activity to illustrate the property of inertia of rest. Question 3. Describe in brief an activity to illustrate the property of inertia of rest. Question 4. Give few examples of Newton’s third law of motion. Question 5. Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it. How will this activity affect the position of the two? Explain your answer. [NCERT Exemplar] Question 6. Why does an athlete puts some sands or cushion on the ground while high jumping? Question 6. Why does an athlete puts some sands or cushion on the ground while high jumping? Question 7...
WE COME TO NXT WEB