Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions tagged jeemain
Questions
Mass density of a solid sphere is $\rho$. Radius of sphere is R. The gravitational field at a distance $r$ from the center of the sphere inside it is
jeemain
physics
class11
unit6
gravitation
q80
medium
asked
Aug 26, 2013
by
meena.p
1
answer
If the period of revolution of an artificial satellite just above the earth's surface is T and density of earth is $\rho$ then $\rho T ^2$
jeemain
physics
class11
unit6
gravitation
q79
medium
asked
Aug 26, 2013
by
meena.p
1
answer
The work done in slowly lifting a body from earth's surface to a height R (radius of earth) is equal to two times the work done in lifing the same body from earth's surface to height h there h is equal to
jeemain
physics
class11
unit6
gravitation
q78
medium
asked
Aug 26, 2013
by
meena.p
1
answer
A uniform ring of mass $M$ and radius $R$ is placed directly above a uniform sphere of mass $8M$ and of radius $R$. The center of the ring is at a distance of $d= \sqrt 3 R$ from the center of the sphere. The gravitational attraction between the sphere and ring is
jeemain
physics
class11
unit6
gravitation
q77
difficult
asked
Aug 26, 2013
by
meena.p
1
answer
A particle of mass M is placed at the center of a uniform sperical shell of mass 2M and radius R. The gravitational potential on the surface of the shell is
jeemain
physics
class11
unit6
gravitation
q76
medium
asked
Aug 26, 2013
by
meena.p
1
answer
Three particles each having a mass 100 gm are placed on the verticles of an equilateral triangle of side 20 cm. The work done in increasing the side of their triangle to 40 cm is $(G= 6.67 \times 10^{-11}\;Nm^2/kg^2)$
jeemain
physics
class11
unit6
gravitation
q75
medium
asked
Aug 26, 2013
by
meena.p
1
answer
Two bodies of masses m and 4m are placed at a distance r . The gravitational potential at a point on the line joining them where the gravitational field is zero, is
jeemain
physics
class11
unit6
gravitation
q74
medium
asked
Aug 24, 2013
by
meena.p
1
answer
Suppose the gravitational force varies inversely as the n-th power of distance. Then the time period of a planet in circular orbit of radius 'r' around the sun will be proportional to
jeemain
physics
class11
unit6
gravitation
q73
medium
asked
Aug 24, 2013
by
meena.p
1
answer
Mean distance of mars from sun is 1.524 times the distance of earth from sun. The period of revolution of mars around the sun is
jeemain
physics
class11
unit6
gravitation
q72
medium
asked
Aug 24, 2013
by
meena.p
1
answer
If a graph is plotted between $T^2$ and $r^3$ for a planet the slope will be
jeemain
physics
class11
unit6
gravitation
q71
medium
asked
Aug 24, 2013
by
meena.p
1
answer
A particle is suspended from a spring and it stretches the spring by 1 cm on the surface of the earth. The same particle will stretch the same spring at a place 800 Km above the earth by
jeemain
physics
class11
unit6
gravitation
q70
medium
asked
Aug 24, 2013
by
meena.p
1
answer
The radius of the earth $R_e$ and the acceleration due to gravity at its surface is g. The work required to rising a body of mass m to height h from the surface of the earth will be
jeemain
physics
class11
unit6
gravitation
q69
medium
asked
Aug 23, 2013
by
meena.p
1
answer
Three particles of equal mass m are situated at verticles of a equilateral triangle of side l. What should be velocity of each particle so that they move on a circular path without changing l
jeemain
physics
class11
unit6
gravitation
q68
medium
asked
Aug 23, 2013
by
meena.p
1
answer
What would be the angular speed of earth, so that bodies lying on equator may appear weightless? $(g=10 m/s^2\; R=6400km)$
jeemain
physics
class11
unit6
gravitation
q67
medium
asked
Aug 23, 2013
by
meena.p
1
answer
Two bodies of mass $10^2 kg$ and $10^3kg$ are lying 1m apart. The gravitational potential at mid point of line joining them is
jeemain
physics
class11
unit6
gravitation
q66
medium
asked
Aug 23, 2013
by
meena.p
1
answer
A mass M is split into two parts m and (M-m) which are then separated by a certain distance. What ratio of m/M maximise the gravitational force between the parts?
jeemain
physics
class11
unit6
gravitation
q65
medium
asked
Aug 23, 2013
by
meena.p
1
answer
A geostationary satellite is orbiting the earth at a height of 6R where R is radius of earth. The time period of another satellite at a height of $2.5 R$ from the surface of earth is
jeemain
physics
class11
unit6
gravitation
q64
easy
asked
Aug 23, 2013
by
meena.p
1
answer
Refer to the image below :
jeemain
chemistry
unit22
organic-chemistry
halogens
q9
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The ratio of radius of two planets is K and ratio of acceleration due to gravity of both planet is G. What will be the ratio of their escape velocity ?
jeemain
physics
class11
unit6
gravitation
q63
easy
asked
Aug 23, 2013
by
meena.p
1
answer
About reactivity in SN1reaction following statements are noted .Pick out the correct pair
jeemain
chemistry
unit22
organic-chemistry
halogens
q8
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
n-Propyl chloride would give SN2 reactions underwhich of the following conditions?
jeemain
chemistry
unit22
organic-chemistry
halogens
q7
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
Which of the following are correct statements regarding unimolecular SN1
jeemain
chemistry
unit22
organic-chemistry
halogens
q6
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
Which of the following are correct order of nucleophilicity in meoH
jeemain
chemistry
unit22
organic-chemistry
halogens
q5
easy
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The compound that undergoes SN1 reaction most rapidly is
jeemain
chemistry
unit22
organic-chemistry
halogens
q4
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The rate of solvolysis of the following allyl chloride in 50% aqueous ethanol at $44^{\circ}C$ is
jeemain
chemistry
unit22
organic-chemistry
halogens
q3
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
Refer to the below image : Assuming both the reactions are E1 the expected ratio between $K_H/K_D$ is
jeemain
chemistry
unit22
organic-chemistry
halogens
q2
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The mass of earth is $6.00 \times 10^{24} \;kg $ and that of the moon is $7.40 \times 10 ^{22} \;kg \;$ and $G= 6.67 \times 10^{-11} Nm^2 /kg^2$. potential energy of the system is $-7.79 \times 10^{28} J$. The mean distance of between earth and moon is
jeemain
physics
class11
unit6
gravitation
q62
easy
asked
Aug 23, 2013
by
meena.p
1
answer
Which of the following can give both $E$ and $Z$ products?
jeemain
chemistry
unit22
organic-chemistry
halogens
q1
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
At higher temperature iodoform reaction is given by
jeemain
chemistry
unit22
organic-chemistry
halogens
q15
easy
asked
Aug 23, 2013
by
sreemathi.v
1
answer
Allyl chloride on dehydrochlorination gives
jeemain
chemistry
unit22
organic-chemistry
halogens
q14
easy
asked
Aug 23, 2013
by
sreemathi.v
1
answer
Which of the following is most reactive towards SN2 reaction?
jeemain
chemistry
unit22
organic-chemistry
halogens
q13
easy
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The gravitational field due to mass distribution is $ E= k/x^3$ in the x direction where k is a constant. Taking gravitational potential to be zero at infinity, its value at a distance x is
jeemain
physics
class11
unit6
gravitation
q61
easy
asked
Aug 23, 2013
by
meena.p
1
answer
What is the acceleration due to gravity at surface of mass if its diameter is $6760\;km$ and mass is one tenth that of earth. The diameter of earth is $12742\;km$ acceleration due to gravity on earth $=9.8 m/s^2$
jeemain
physics
class11
unit6
gravitation
q60
easy
asked
Aug 23, 2013
by
meena.p
1
answer
A stone is dropped freely into a tunnel along the diameter of the earth. When it reaches the center of earth then it has only
jeemain
physics
class11
unit6
gravitation
q59
easy
asked
Aug 23, 2013
by
meena.p
1
answer
At what height from the ground will the value of 'g' be the same as that in 10 km deep mine below the surface of earth
jeemain
physics
class11
unit6
gravitation
q58
easy
asked
Aug 23, 2013
by
meena.p
1
answer
A planet moves in an elliptical orbit with sun at one of its focii <br> 1) In path QRP work done by gravity is positive . <br> 2) In path PSQ work done by gravity is negative . <br> 3) Linear velocity of rotation from Q to P via R decreases. <br> 4) Gravitational potential energy increases in going from P to Q via R
jeemain
physics
class11
unit6
gravitation
q57
easy
asked
Aug 22, 2013
by
meena.p
1
answer
The Planet mercury is revolving in an elliptical orbit around the sun as shown. Kinetic energy will be greatest at
jeemain
physics
class11
unit6
gravitation
q56
easy
asked
Aug 22, 2013
by
meena.p
1
answer
As measured by an observer on earth, what would be the difference, if any, in the period of two satellite each in a circular orbit near the earth's equatorial plane, but one moving eastward and other moving westward.
jeemain
physics
class11
unit6
gravitation
q55
easy
asked
Aug 22, 2013
by
meena.p
1
answer
A satellite of mass m is orbiting the earth at a height 'h' from its surface. If M is Mass of the earth and R its radius then how much energy must be spent to pull the satellite out of the earth's gravitational field?
jeemain
physics
class11
unit6
gravitation
q54
easy
asked
Aug 22, 2013
by
meena.p
1
answer
If the distance between Earth and the sun were half its present value, the number of days in a year would be
jeemain
physics
class11
unit6
gravitation
q53
easy
asked
Aug 22, 2013
by
meena.p
1
answer
The mean radius of earth is R, its angular velocity on its own axis is 'w' and acceleration due to gravity is g. What will be the radius of orbit of a geostationary satellite ?
jeemain
physics
class11
unit6
gravitation
q52
medium
asked
Aug 22, 2013
by
meena.p
1
answer
A satellite revolving in a circular equatorial orbit of radius $r= 2 \times 10 ^4 km$ from west to East appears over a certain point at the equator every $11.6$ hours. Calculate the actual angular velocity of the satellite
jeemain
physics
class11
unit6
gravitation
q51
medium
asked
Aug 22, 2013
by
meena.p
1
answer
A geo stationary satellite orbits around the earth in a circular orbit of radius $36000km$. Then the time period of a spy satellite orbiting a few Kilometers above the earth's surface $(R_{earth}=6400 Km)$ will be approximately
jeemain
physics
class11
unit6
gravitation
q50
medium
asked
Aug 22, 2013
by
meena.p
1
answer
Refer to the image below :
jeemain
chemistry
unit22
organic-chemistry
halogens
q12
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
Predict the product
jeemain
chemistry
unit22
organic-chemistry
halogens
q11
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
Which of the following represents the correct graph for SN2 reaction?
jeemain
chemistry
unit22
organic-chemistry
halogens
q10
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
A satellite of mass $m_s$ revolving in a circular orbit of radius $r_s$ round the earth of mass M has a total energy E. Then its angular momentum will be
jeemain
physics
class11
unit6
gravitation
q49
difficult
asked
Aug 22, 2013
by
meena.p
1
answer
Refer to the below image :
jeemain
chemistry
unit22
organic-chemistry
halogens
q9
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
A satellite is seen after each 8 hours over equator at a place on earth when its sence of rotation is opposite to the earth. The time interval after which it can be seen at the same place when sense of rotation of earth and satellite is same , will be
jeemain
physics
class11
unit6
gravitation
q48
medium
asked
Aug 22, 2013
by
meena.p
1
answer
The predominant product formed when 3− methyl −2−pentene reacts with $HOCl$ is
jeemain
chemistry
unit22
organic-chemistry
halogens
q8
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
Page:
« prev
1
...
321
322
323
324
325
326
327
...
338
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...