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question_answer1)
Select the odd one out.
A)
See-saw done
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B)
Tweezers done
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C)
Crowbar done
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D)
Scissors done
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question_answer2)
The given picture represents the ________ force.
A)
Muscular done
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B)
Gravitational done
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C)
Frictional done
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D)
All of these done
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question_answer3)
________ is an example of wheel and axle.
A)
B)
C)
D)
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question_answer4)
To reduce force X on a carrom board, talcum powder is applied. The force X is the force _______.
A)
Applied by hand on sponge ball done
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B)
That makes it tough to lift heavy objects done
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C)
That pulls down all objects towards earth done
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D)
That prevents us from slipping while walking done
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question_answer5)
Study the given figure carefully, it will be the toughest to lift the rock when the force is applied on X, while it will be easiest to do the same when the force is applied on Y. Now, select the correct option regarding X and Y.
A)
B)
C)
D)
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question_answer6)
When a hand blender is switched on, ___________ energy changes to _______ and _______ energy.
A)
Mechanical, Sound, Heat done
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B)
Sound, Heat, Mechanical done
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C)
Electrical, Heat, Potential done
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D)
Electrical, Kinetic, Sound done
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question_answer7)
Select the INCORRECT statement.
A)
Energy is the capacity to do work. done
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B)
Energy cannot be changed from one form to another. done
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C)
Potential energy is the energy due to motion. done
clear
D)
Both (b) and (c) done
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question_answer8)
Sumeet threw a pebble directly upwards. Which one of the following statements is correct regarding this?
A)
Gravity will have no effect on the pebble until it reaches its highest point. done
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B)
The pebble will keep going upwards at the same speed until it reaches its highest point. done
clear
C)
The pebble will keep going upwards until gravity ceases to act on it. done
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D)
Gravity will act on the pebble both while it is going up and also while it is falling down. done
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question_answer9)
A toy car is released from point Q of the ramp and travels towards point P. What is/are the force(s) responsible for pulling the car towards point P?
(a) Weight of the car
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(b) Earth's gravity
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(c) Earth's magnetic field
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(d) Frictional force between the wheels and the ramp
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A)
(b) only done
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B)
(a) and (b) only done
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C)
(b) and (d) only done
clear
D)
(a), (b), (c) and (d) done
clear
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question_answer10)
Geeta stretched a piece of plastic food wrap over a large bowl and held it firmly in place with a rubber band. She put some green beans on the plastic. Then she used a spoon to hit the side of the bowl. She saw that the beans bounced all over the plastic producing little tapping noises. Which of the following shows the energy conversions that have taken place?
A)
\[Movement\to Sound\to Movement\] done
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B)
\[Sound\to Sound\to Movement\] done
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C)
\[Movement\to Sound\to Movement\to Sound\] done
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D)
\[Sound\to Movement\to Sound\to Movement\] done
clear
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question_answer11)
Which of these machines work on the same principle as does the see-way?
A)
P and Q done
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B)
Q and R done
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C)
P and R done
clear
D)
R and S done
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question_answer12)
Naziya poured 100 mL of boiling water into 4 containers of similar size and material from one to another in the order of a, b c, and d as shown here. Which containers have highest and lowest temperature, respectively
A)
d and c done
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B)
d and b done
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C)
a and d done
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D)
a and b done
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question_answer13)
As Sushil is pushing a carton up a ramp, the _____energy fro the food that Sushil has eaten changes into ____energy of the carton. When the carton reaches the deck of the lorry, this energy is stored in the carton as ___energy. However, some of the energy from Sushil is changed into ____and energy.
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Select the correct sequence of words to complete the above paragraph.
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A)
Chemical, Kinetic, Gravitational, Heat, Potential done
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B)
Kinetic, Potential, Frictional, Heat, Light done
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C)
Chemical, Kinetic, Potential, Heat, Sound done
clear
D)
Chemical, Potential, Kinetic, Heat, Sound done
clear
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question_answer14)
Which of the following is correct about the. girls moving the sack bags as shown in the above diagram?
1. Girl a has to work more against friction. |
2. Girl b does not Slave to work against friction. |
3. The wheels of the trolley have reduced the friction. |
A)
1 only done
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B)
3 only done
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C)
1 and 3 only done
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D)
2 and 3 only done
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question_answer15)
Pallavi wants to find out whether the length of a ramp affects the force needed to move a wooden block up the ramp. She sets up the given experiment. What should she keep the same?
A)
The height of both the ramps done
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B)
The length of both the ramps done
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C)
The weight of spring balance done
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D)
Both (a) and (b) done
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question_answer16)
A bail bearing was released on a curved slope as shown here. As the ball bearing moved, its kinetic energy was calculated and plotted on the graph as shown.
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Which point on the graph shows the kinetic energy of the bail bearing when it was at the lowest point of the slope for the first time?
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A)
W done
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B)
X done
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C)
Y done
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D)
Z done
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question_answer17)
Ravi set up an experiment as shown in the given diagram. The diagram shows five identical balls being suspended on a rod by strings of different lengths. Ravi then cut all five strings at the same time and the balls were allowed to fall freely to the ground.
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Which of these statements holds true for this experiment?
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A)
Ball b had the greatest impact on the ground. done
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B)
Ball a had more potential energy than ball b at the start. done
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C)
Ball d had the highest potential energy at the start. done
clear
D)
Ball a and e had different amounts of potential energy at the start due to their different positions along the rod. done
clear
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question_answer18)
If four similar cars carrying different number of people, were to travel down the same slope, which car will travel faster down the slope?
A)
B)
C)
D)
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question_answer19)
Select the setup in which the plank will not move at ail but may break the fulcrum not be fixed permanently on the plank.
A)
B)
C)
D)
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question_answer20)
Rohan flicked the same coin with equal force on three different surfaces X, Y and Z. The distance travelled by the coin on different surfaces in own stroke is tabulated a shown.
Now, select the correct option regarding it.
A)
X could be glass and Z could be cardboard. done
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B)
Y could be cardboard and Z could be polished plane mirror surface. done
clear
C)
X could be laminated plastic sheet and Y could be sandpaper. done
clear
D)
X could be marble floor and Z could be jute mat. done
clear
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