9th physics Test No 3


Welcome to Luqman English academy 


Chapter 3 Dynamics


1 Law of motion was presented by the 


scientist.


 A. Einstein


 B. Newton✔️


 C. Galileo


 D. Archimedes


2 The approximate weight of 80 gram mass 


on the surface of Earth is


 A. 800 N


 B. 80 N


 C. 0.8 N✔️


 D. 8 N


3 A string is stretched by two equal and 


opposite forces 10 N each. The tension in 


the string is


 A. Zero✔️


 B. 5N


 C. 10N


 D. 20N


4 1 N ___________


 A. 1 kgms✔️


 B. 1 kg ms


 C. ms


 D. All


5 Inertia depends upon:


 A. Weight


 B. Mass✔️


 C. Density


 D. Force


6 When the cyclist stop pedalling, 


bicycle stops due to :


 A. Friction✔️


 B. Momentum


 C. Weight


 D. Mass


7 2nd law of motion is stated as:


 A. F=m/a


 B. F=ma✔️


 C. F=a/m


8 Newton's first law of motion is known as 


law of ___________________


 A. Force


 B. Inertia✔️


 C. A and B both


 D. None


9 Friction causes _____________


 A. Heat✔️


 B. Light


 C. Mass


 D. Weight


10 ________ is used to measure the force 


or weight of a body :


 A. Physical balance


 B. Spring balance✔️


 C. A and B both


 D. None


11 Which is unitless quantity:


 A. Mass


 B. Force


 C. Inertia✔️


 D. Momentum


12 Outer edge of the curved road is 


elevated to prevent


 A. Circular motion


 B. Centripetal force


 C. Skidding✔️


 D. Protection


13 When horse pulls a cart, the action is 


on the:


 A. Cart


 B. Earth


 C. Horse


 D. Earth and cart✔️

9th physics Test No 2


Welcome to luqman English academy


1 The unit of acceleration is


 A. ms-1


 B. ms


 C. ms-2✔️


 D. ms2


2 A straight line parallel to time-


axis ona distance -time graph tells 


that the object is.


 A. Moving with constant speed


 B. In motion


 C. At rest✔️


 D. Moving with variable speed


3 Paratrooper while coming down 


attains a velocity called.


 A. Variable velocity


 B. Uniform velocity


 C. Average velocity


 D. Terminal velocity✔️


4 If the velocity of body increases 


with time, the acceleration will 


be.


 A. Negative


 B. Uniform


 C. Positive✔️


 D. Variable


5 The scientist who notice that all 


the freely falling objects hae same 


acceleration.


 A. Einstein


 B. Galileo✔️


 C. Coulomb


 D. Newton


6The velocity of freely falling 


bbodies moving upward.


 A. Decreases✔️


 B. Increases


 C. Constnat


 D. zero


7 In graph reference point is taken 


as.


 A. Origin✔️


 B. x-axis


 C. variable


 D. coordinates


8 the to and fro motion of a body 


about its mean positionis called


 A. Circular motion


 B. Random motion


 C. Rotatory motion


 D. Vibratory motion✔️


9 the motion of the rider in Ferris 


wheel is.


 A. Vibratory


 B. Translatory✔️


 C. Rotatory


 D. Linear


10 The quantities that describe 


completely by magnitude and direction 


are.


 A. Scalar


 B. Vector✔️


 C. Base


 D. Derived


11 Graph is plotted between ........ 


variable.


 A. 1


 B. 2


 C. 3


 D. 4✔️