Question 1 :
A body is submerged in water. It is taken out and then submerged in mercury. What happens to its relative density with respect to the liquid in which it is submerged?
Question 5 :
60 cc of a liquid of relative density 1.4 is mixed with 40 cc of another liquid of relative density 0.8. The density of the resulting mixture will be
Question 7 :
The direction of weight of an object is in .............. direction.
Question 8 :
The weight of a body on the surface of the moon is $\dfrac {1}{6}th$ of that on the earth's surface. It is because acceleration due to gravity on the surface of the moon is six times that on the surface of the earth.
Question 9 :
Any solid will not sink in water if its relative density is
Question 10 :
Any solid will sink in water, if its relative density is :
Question 11 :
Mass of a body changes at different places on earth. State whether true or false.
Question 12 :
Name the force acting on a plastic bucket containingwater held above ground level in your hand. <br>
Question 13 :
If the mass of the body on the surface of the earth is $50\ kg$, its mass at the centre of the earth is:
Question 14 :
A globe of steel has a mass of 12 g and a volume of $15.2 cm^3$. Find its relative density wrt water.
Question 15 :
A body initially floats in water. When another body is kept over it, then it sinks because :
Question 19 :
If the gravitational force of earth suddenly disappears, then which of the following is correct?
Question 20 :
As a body moves from the equator to the poles, the value of g experienced by the body
Question 22 :
How much would a 60 kg boy weigh on the moon?<br/>Given: $g_{moon}=\dfrac {g_{earth}}{6}$<br/>
Question 23 :
On the earth surface, 'g' is a vector and its direction is oriented towards the centre of the
Question 25 :
How does the buoyant force acting on the boat change if the boat is loaded so that more of the boat is below the water?<br>
Question 27 :
Why does a balloon stop rising when it attains a certain height?
Question 29 :
The apparent weight of a body, weighing M kg, during free fall is:
Question 31 :
Assertion: Pressure inside water-drop is more than that outside drop.
Reason: Water molecules at the surface layer experience net inward force and hence all the water molecules on surface exert force on just inner layer molecules giving rise to a kind of volumetric compression
Question 32 :
A body weighs $12 N$ on the surface of the moon. What is its weight on the surface of the earth?
Question 34 :
Specific gravity of the body is numericallyequal to ________of the body.
Question 35 :
Is the buoyant force on a submerged object equal to the weight of the object itself or equal to the weight of the fluid displaced by the object?<br/>
Question 36 :
Fill in the blank. If a substance's density is less than one then the substance is _________ than reference.<br/>
Question 37 :
State whether the given statement is True or False :Acceleration due to gravity, ${g=\frac{GM}{R^2}}$ where symbols have their usual meanings.
Question 40 :
A body has a relative density of $x$ with respect to water at $25^o C$. What is the effect on the relative density of the body with respect to water at $50^o$ C? 
Question 41 :
A rocket of mass $120 kg$ is fired in a gravity free space is ejecting gases with velocity $600m/s$ at the rate of $1kg/s$. What will be the initial acceleration of the rocket?
Question 42 :
The unit of mass in SI system is ______ and the unit of weight in SI system is _______.
Question 44 :
If a body X floats in liquid Y. The density of body X is greater than liquid Y. True or false
Question 45 :
At the Earth, a block of mass $m$ which rest on the frictionless table,  let $F$ be the force required to produce acceleration $a$. Calculate the force at the Moon to produce same acceleration if  $g_{moon}$ is one sixth of $g_{earth}$.
Question 46 :
A body is lying on the surface of earth.Suppose that the earth suddenly loses its power of attraction, then
Question 47 :
If an immersed object displaces liquid weighing $10\ N$, the buoyant force on the object is <br/>
Question 48 :
A woman weighs 500 N earth. With how much forces her body pulling up on the earth?
Question 49 :
The value of acceleration due to gravity near the earth's surface is
Question 50 :
The relative density of a steel ball will be highest with respect to:
