Force and Pressure Test

Result

Force and Pressure Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements are true?

(i) An object will continue moving uniformly until the resultant force on it is zero.

(ii) The bodies do not change their state of rest or motion unless acted upon by an unbalanced external force.

(iii) If a body is at rest on the surface of the Earth then the net downward force exerted by the Earth and net upward force exerted on the body are not equal to each other.

A
Only (i) and (ii)

B
Only (ii) and (iii)

C
Only (i) and (iii)

D
All (i), (ii) and (iii)

Solution

According to Newton's third law of motion, for every action, there is an equal and opposite reaction.

Question 2

1 / -0

Match the column I with column II and select the correct option from the codes given below.

Column I	Column II
(a) A girl pulling the leash of a running dog	(i) Impact force can make stationary object to move by an another moving object.
(b) A driver turning the steering wheel of a car	(ii) Gravity acts upon an object
(c) When you hit a nail with a hammer	(iii) Force can make an object go slower
(d) A ball released from top of a tower	(iv) Force can change the direction of a moving object.

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

Solution

A girl pulling the leash of a running dog makes dog slower; A driver turning the steering wheel of a car is changing the direction of the car; By hitting a nail with a hammer is showing impact force; A ball thrown upwards always comes towards the Earth due to gravity.

Question 3
1 / -0

When we walk on sand our feet sink into it and it is difficult for us to walk but a camel can easily walk on sand because

(i) The weight of the camel is the force that is spread over the large area covered by its feet.

(ii) The pressure exerted by the camel's body on the sand is very large.

A
Only (i) is correct.

B
Only (ii) is correct.

C
Both (i) and (ii) are correct and (ii) is the conclusion of (i).

D
Both (i) and (ii) are correct and (i) is the conclusion of (ii).
Question 4
1 / -0

As we go higher up on mountains, our ears pop because

A
Air pressure around our ears increases

B
The pressure exerted by the blood near ears increases

C
Air pressure around our ears decreases

D
None of these
Question 5
1 / -0

In the given figure, a beaker is filled with water. A, B and C are three holes in beaker, which of the following statements is correct regarding this?

A
The water comes out with maximum pressure from hole A.

B
The pressure of water comes out from hole B is greater than the pressure of water comes out from hole C and hole A.

C
The water falls out the farthest through the hole C.

D
The water falls out the nearest through the hole B.

Solution

The water pressure at the base of the container is much greater than at the top. So water falls out the farthest through the hole C.