Gravitation Test

Result

Gravitation Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

Statement A: A person will weight more in Ooty than in Delhi,
Statement B:Mass is measured by pan balance and weight is measured by spring balance.
Which of the two statements is true?

A
statement A

B
statement B

C
both A and B

D
neither A nor B

Solution

Value of g decreases as we move at higher altitude, so ‘g’ is less at Ooty than Delhi. Weight will be less in Ooty than Delhi. Mass is measured by pan of beam balance and weight is measured by spring balance.
Question 2
1 / -0

Statement A: Mass of a body is a fundamental property
Statement B: Weight is a fundamental property..
Which of the two statements is true?

A
statement A

B
statement B

C
both A and B

D
neitherA nor B

Solution

Mass of a body always remains same. Mass is independent of other factors. Hence mass is a fundamental property. On the other hand weight of the body is the force by which it is attracted by earth that depends upon value of ‘g’. So, weight is not a fundamental factor.
Question 3
1 / -0

If a block of mass weighed 1N at equator, What would be its weight at poles?

A
1N

B
less than 1N

C
more than 1N

D
Zero

Solution

Value of ‘g’ is slightly less at poles in comparison to that of equator due to closeness to centre of earth. Weight of the body is equal to product of mass and acceleration due to gravity. Hence, weight will be more on poles than equator.
Question 4
1 / -0

Two objects of different masses are dropped freely from a height near the surface of earth they have
A Different velocities at any instant
B Same velocities at any instant
C Different accelerations
D Same acceleration

A
(B) and (C) are correct

B
(B) and (D) are correct

C
(A), (B) and (C) are correct

D
(A), (B) (C) and (D) are correct

Solution

Acceleration and velocity remain same when a body falls freely towards the earth irrespective of the distance travelled or yet to travel
Question 5
1 / -0

A stone falling towards earth

(A) Is attracted by earth
(B) Attracts the earth
(C) Both stone and earth attract each other
(D) No one attract each other

A
(A) and (B) are correct

B
(B) and (C) are correct

C
(A), (B) and (C) are correct

D
All of these

Solution

Every body is attracted by earth and attracts the earth towards it. But the movement occurs where the force of attraction is higher. Body with higher mass will have more force of attraction i.e. the earth.
Question 6
1 / -0

In which of the following pressure is increased
(A) Strap of bag is made wider
(B) Knife with sharp edge
(C) Shoes with flat sole
(D) Nail with finely pointed tip

A
(B) and (D) are correct

B
(A), (B) and (C) are correct

C
(B) and (C) are correct

D
(A), (B), (C) and (D) are correct

Solution

Pressure is inversely proportional to the area of contact.

Smaller the area of an object in contact with a body, higher will be the pressure exerted by it.
Question 7
1 / -0

What is buoyant force?

A
Partially downward force

B
Partially upward force

C
An upward force on an object unimmersed in a liquid

D
A down ward force on an object immersed in a liquid

Solution

The upward force experienced by the body when partially or completely immersed in fluid.

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Re-Attempt Weekly Quiz Competition

Gravitation Test - 9

Result

Gravitation Test - 9

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SHARING IS CARING

Question 1

statement A

statement B

both A and B

neither A nor B

Solution

Question 2

statement A

statement B

both A and B

neitherA nor B

Solution

Question 3

1N

less than 1N

more than 1N

Zero

Solution

Question 4

(B) and (C) are correct

(B) and (D) are correct

(A), (B) and (C) are correct

(A), (B) (C) and (D) are correct

Solution

Question 5

(A) and (B) are correct

(B) and (C) are correct

(A), (B) and (C) are correct

All of these

Solution

Question 6

(B) and (D) are correct

(A), (B) and (C) are correct

(B) and (C) are correct

(A), (B), (C) and (D) are correct

Solution

Question 7

Partially downward force

Partially upward force

An upward force on an object unimmersed in a liquid

A down ward force on an object immersed in a liquid

Solution

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