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- Chapter 1 – Measurements and Experimentation
- Chapter 2 Motion In One Dimension
- Chapter 3 Laws Of Motion
- Chapter 4 Pressure In Fluids And Atmospheric Pressure
- Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation
- Chapter 6 Heat And Energy
- Chapter 7 Reflection Of Light
- Chapter 8 Propogation Of Sound Waves
- Chapter 9 Current Electricity
- Chapter 10 Magnetism

**A body will experience minimum upthrust when it is completely immersed in:**

**(a) Turpentine**

**(b) Water**

**(c) Glycerine**

**(d) Mercury**

Answer:

(a) Turpentine

Lesser the density of the liquid, the lesser the upthrust experienced by a body. Amongst these, turpentine has the least density

"students welcome to leader learning this
is ashwini i teach science at lado
so here in this question as
a body will experience minimum of thirst
when it is completely
immersed in a turpentine b water
c glycerine and d mercury
so here we can say that what is
up thirst years first i would like to
explain the uptest
that when a body is immersed in
liquid okay so suppose this is the
body okay and this is water our liquid
is
water here now if i am saying that
the body is having its weight we can
write it as wg
and the liquid is also having its weight
or volume we can write it as wl
so here the liquid will exert every
liquid will exert
a force on that object which is
going to immersed in its surface okay
immersed in it
so we are immersing this object in the
liquid so here the liquid will or the
water will exerting a force
in the upward direction on the object
so this force is represented as f a this
is known as
up thirst force this force will make
this object to float
if this f a is
greater than or
equals to the weight of the object
then the object will float
okay and if the second thing
if the fa is
lesser than the weight of the
object then the object will sink because
the weight of the
object is more here and up thirst force
is less so the object will sink
now here the minimum of thirst is
phase in this liquid the answer is top
in time
why is it so the answer is up in time
because
the density of the liquid is lesser than
the up thirst experienced by a body
the turpentine has least density so
let's see the densities of all the
liquids
the turpentine is having zero point
eight six five zero point eight six five
gram per centimeter cube
okay now i'm talking about water then it
is one gram per centimeter cube
and if i'm talking about glycerin then
it is 1.26
grams per cubic centimeter and for the
fourth one is mercury
it is 5.43 gram
per cubic centimeter so which one is the
least
least one is this top in time which is
less than the water itself
so the answer is lesser the density of
the liquid
lesser the up thirst experienced by a
body because we see that
the fa is equals to the wl okay
if the force up thoughts force is equals
to
the weight of the liquid okay whatever
will be the weight of the liquid it is
equals to the upthirst force that is
fa exerted by the liquid on the object
so here the answer is stop indict i hope
everything is clear to you
if you have any doubts then please put
it down in the comment section
for more such video solutions please
subscribe leader learning thank you"

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