physics chapter 1
Quiz by Seemita Agarwal
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
- Q 1/40Score 0
A body starts from rest and acquires a velocity V in time 'T'.The work done on the body in time't' will be proportional to
29
- Q1
A body starts from rest and acquires a velocity V in time 'T'.The work done on the body in time't' will be proportional to
30s - Q2
Which of the following statements is correct?
D. Friction increases the time taken by a body projected upwards to reach the highest point
B. If there is no friction, moving vehicles can not be stopped even by locking the brakes.
A . If there is no friction, work to be done to move a body up an inclined plane will be zero.
E. All of the above
C.As the angle of inclination is increased, the normal reaction on the body placed on it increases.
30s - Q3
A man of mass 60 kg climbs up a 20 m long stair case to reach the top of a building, which is 10 m high. What is work done by him?
D. 30 KJ
E.3.3 KJ
A. 12 KJ
B. 3 KJ
30s - Q4
A car running at 25 km/h can be brought to rest by applyingbrakes at a distance of 0.5 m. If the car is running at 75 km/h, how far willit go before coming to rest, if the braking force remains the same?
C.3 m
D.None of the above
A.1 m
E.12.5 m
B.2 m
30s - Q5
A ball falls from a height of a 20 𝑚 and then bouncesback up to 10 𝑚 height.The loss of energy is:
C.50%
B.25%
E.100%
D.75%
A.5%
30s - Q6
A truck is 8 times heavier than a car and is moving at half the speed of the car. The amount of work done required to stop the truck as compared to the car is:
A. Same
C. Three times more
B. Two times more
E.None of these
D.Four times more
30s - Q7
Which of the following remains constant for an isolated system?
B. Kinetic energy
C. Kinetic energy and mechanical energy
E.None of these
D.Potential energy
A. Sum total of kinetic energy and potential energy
30s - Q8
Which of the following is the correct expression for work 'w',if is the force and is the displacementand angle between and is ?
30s - Q9
An engine pumps out 40 kg of water in one second. The water comes out vertically upwards with a velocity of 3ms-1. What is the power of engine in kilowatt?
B.12 KW
C.120 KW
D.12000 KW
E.1200 KW
A.1.2 KW
30s - Q10
A body of mass M is lowered with acceleration g/2 with the help of a string and through a distance l. What is the work done by the string?
B. 3 Mgl/2
E.2Mgl
D. Mg1/4
C. Mgl/2
A. Mgl
30s - Q11
A girl of weight 400 N climbs up a rope through a height of 8m. The girl takes 20 s to accomplish this task. What is the power expended bythe girl?
B.160 W
C.100 W
D.800 W
E.960 W
A.200 W
30s - Q12
A body is under the action of two equal and opposite forces,each of 3N and is displaced by 2 m. Which of the following is the value of workdone by the body?
E.1.5 J
B.Zero
D.- 6 J
A.+ 6 KJ
C.3 KJ
30s - Q13
Which of the following increases with rise in ball that isprojected upwards?
A. Momentum
E. Force
D. Potential energy
C. Kinetic energy
B. Retardation
30s - Q14
A bullet is fired into a block. Its velocity decreases by 50%,when it penetrates through 9 cm. What will be the total distance penetrated bythe bullet?
A.10 cm
C.15 cm
D.8 cm
E.18 cm
B.12 cm
30s - Q15
The force of attraction between two objects is called the______.
D. centripetal force
C. gravitational force
A. electromagnetic force
B. centrifugal force
30s
