Question
If a,b,c are in A.P the 
are in
- A.P
- G.P
- H.P
- A.G.P
Hint:
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
The correct answer is: A.P
If θ is one of the acute angles in a triangle, then the sine of theta is the ratio of the opposite side to the hypotenuse, the cosine is the ratio of the adjacent side to the hypotenuse, and the tangent is the ratio of the opposite side to the adjacent side.
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If 
then
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If then
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Two bodies of mass 1 kg and 3 kg have position vector 
respectively the center of mass of this system has a position vector.
Two bodies of mass 1 kg and 3 kg have position vector respectively the center of mass of this system has a position vector.
In 
In
In HCl macule the separation between the nuclei of the two atoms is about
The approximate location of the center of mass of the molecule is - -A,i with respect of Hydrogen atom ( mass of is 35.5 times of mass of Hydrogen)
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Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, 
is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
according to reaction,
The 
of
are 
and 
respectively. The respective values of their standard entropies are 194.0, 130.0 and 
. The values of 
Answer the following questions on the basis of above information
Heat change occurring during conversion of 1 kg of 
(molar mass 172 g 
) of 
is equal to
Concrete is produced from a mixture of cement, water and small stones. Small amount of gypsum, is added in cement production to improve the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate
according to reaction,
The of are and respectively. The respective values of their standard entropies are 194.0, 130.0 and . The values of
Answer the following questions on the basis of above information
Heat change occurring during conversion of 1 kg of (molar mass 172 g ) of is equal to
For an ideal gas, an illustration of three different paths 
and 
from an initial state 
to a final state 
is shown in the given figure
Path A represents a reversible isothermal expansion from 
to 
. Path 
represents a reversible adiabatic expansion (
) from 
to
followed by reversible heating the gas at constant volume (
) from 
to . Path represents a reversible expansion at constant pressure 
from 
to 
followed by a reversible cooling at constant volume 
from to
What is 
, for path 
?
For an ideal gas, an illustration of three different paths and from an initial state to a final state is shown in the given figure
Path A represents a reversible isothermal expansion from to . Path represents a reversible adiabatic expansion () from to followed by reversible heating the gas at constant volume () from to . Path represents a reversible expansion at constant pressure from to followed by a reversible cooling at constant volume from to
What is , for path ?
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A straight line of length 9 units slides with its ends A, B always on x and y axes respectively. Locus of centroid of OAB is
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If the earth were to suddenly contract so that its radius become half of it present radius, without any change in its mass, the duration of the new day will be....
If the earth were to suddenly contract so that its radius become half of it present radius, without any change in its mass, the duration of the new day will be....
If the angles of the Δ ABC are in A.P then 3R2=1
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
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s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
Two circular loop A & B of radius rA and rB respectively are made from a uniform wire. The ratio of their moment of inertia about axes passing through their center and perpendicular to their planes is 
is equal to...
Two circular loop A & B of radius rA and rB respectively are made from a uniform wire. The ratio of their moment of inertia about axes passing through their center and perpendicular to their planes is is equal to...
In 
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
In
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
