Science Multiple Choice Quiz (Topic : Force ) Useful for entrance exam ( Nursing / Science and many more)

 

Science Quiz ( Topic: Force)

Quiz

 

1. Newton’s first law of motion gives
   
   1.   Definition of force
   2.   Definition of inertia
   3.   Measurement of force
   4.   Both A and B
2. )Which of the following is scalar quantity?
   
   1.   Torque
   2.   Current density
   3.   Electric flux
   4.   Electric field density
3. Which of the following is statement is incorrect?
   
   1.   Velocity of body at maximum height is zero but not acceleration when it is thrown vertically upward
   2.   Acceleration due to gravity of body at uniform velocity is more than zero.
   3.   Body moving in circular path uniform speed may have variable velocity.
   4.   Rest and motion are relative terms.
4. ”Running soldiers jerk forward, when the commander commands to stop him.” Due to which phenomenon it happen?
   
   1.   Inertia of motion
   2.   Inertia of rest
   3.   Inertia of direction
   4.   A and C both
5. If a body projected vertically upward ,after attaining a maximum height of 15m, it comes to the ground what are the displacement and distance covered?
   
   1.   15m, 0 m
   2.   0m,15m
   3.   30m, 0m
   4.   0m, 30m
6. 72km/hr is equal to ………………
   
   1.   10m/sec
   2.   20m/sec
   3.   30m/sec
   4.   40m/sec
7. Force required to produce 1m/s2 on 1kg mass is equal to …………….
   
   1.   10^5 Joule
   2.   10^7 erg
   3.   10^5 Dyne
   4.   10^8 Joule
8. 8)If earth stops rotating the value of g at equator …………..
   
   1.   increases
   2.   decreases
   3.   remain same
   4.   Impossible
9. Which of the following is the correct difference between weightlessness and free fall.
   
   1.   Weightlessness is cause and freefall is effect.
   2.   Weightlessness is possible in absence of gravity too but freefall is not possible in absence of gravity
   3.   Weightlessness is only possible in case of freefall and freefall is possible without weightlessness
   4.   None of them are correct
10. A apparent weight of body zero , then
    
    1.   Acceleration due to gravity of body=0
    2.   body falls freely
    3.   Both A and B
    4.   None of them
11. Which is not a properties of gravitational constant?
    
    1.   It depends upon the temperature.
    2.   It is independent with physical factors
    3.   It is independent with medium
    4.   It is independent with distance
12. The value of gravitational constant was first experimentally measured by…………..
    
    1.   Nicholas Copernicus
    2.   Galileo
    3.   Sir Isaac Newton
    4.   Henry Cavendish
13. At which condition , gravitational force between two bodies is equal to gravitational constant?
    
    1.   When bodies of unit masses separated by unit distance
    2.   When product of masses is equal to square of distance between their centers .
    3.   When product of masses is equal to distance between their centers
    4.   None of the above
14. A stone dropped from the roof of the building takes 2 second to reach the ground. What is the height of the building.
    
    1.   29.2 m
    2.   39.2m
    3.   19.6m
    4.   49.2m
15. What is the difference between gravitational force when the mass of one body is made 4 times and distance between two bodies is made half by keeping one mass constant?
    
    1.   4 times of initial gravitational force
    2.   16 times of initial gravitational force
    3.   15 times of initial gravitational force
    4.   3 times of initial gravitational force
16. Match the column-I and column-II on the basis of their relation.
    Column-I Column-II
    i) g at the equator of the earth p) Comparatively more due to less radius
    ii) g at the poles of the earth q) Comparatively less due to more radius
    iii) g at the center of the earth s) Comparatively less due to less radius
    t) zero due to equal radius and depth
    u) comparatively more due to more radius
    
    1.   i-q, ii-p, iii-t
    2.   i-s, ii-u,iii-t
    3.   i-s, ii-p, iii-s
    4.   i-q, ii-u, iii-t
17. 17)Which of the following statement(s) is /are correct?
    I )Newtons law of motion is universal law because it applicable for every body exist in universe.
    II) Weight of body is more at polar region as W proportional to g and g proportional to R.
    III) Body experience its weight due to the effect of gravity.
    
    1.   I and III only
    2.   I and II only
    3.   II and III only
    4.   III only
18. The mass of a heavenly body is one third of the mass of the earth and its radius is just half the radius of the earth. If a stone weights 200N on the earth’s surface , find its weight on the heavenly body.
    
    1.   256.67N
    2.   266.67N
    3.   276.67N
    4.   269.67N
19. Which of the following is correct ?
    
    1.   Value of g at the certain h is less than 9.8m/s^2 as (R/(R+h))^2<1.
    2.   Gravitation force decreases when
       1/d^2 >1 .
    3.   Capacity of body to lift mass is equal in both earth and moon as mass remain constant
    4.   All of them are correct
20. A body is in the free fall condition. It has
    
    1.   Constant velocity
    2.   uniform speed
    3.   uniform acceleration
    4.   zero acceleration
21. Mass remaining the same, if the diameter of the earth is reduced to half , its acceleration due to gravity will be ……….
    
    1.   Increased by 4 times
    2.   decreased by 4 times
    3.   Increased by 2 times
    4.   decreased by 2 times
22. A feather takes 20 sec to fall from 10m height in earth. It will take …………to fall in moon
    1.   15 sec
    2.   20 sec
    3.   25 sec
    4.   30sec
23. It is difficult to catch a cricket ball compared to a tennis ball moving with the same velocity. This statements is supported by ……………
    
    1.   Newton’s first law of motion
    2.   Newton’s second law of motion
    3.   Newton’s third law of motion
    4.   none of them
24. Assertion: free-fall does not mean the acceleration due to gravity is zero.
    Reason: body exerts no force on its support and a=g during free fall.
    
    1.   Both assertion and reason are correct and reason is correct explanation of assertion.
    2.   Both assertion and reason are correct and reason is not correct explanation of assertion.
    3.   Assertion is true but reason is false
    4.   Ascertain is false but reason is true
25. Which of the following is the value of G in C.G.S system.
    
    1.   6.67 x 10^-11
    2.   6.67 x 10^-8
    3.   6.67 x 10^-13
    4.   6.67 x 10^-9
26. Mass of the Jupiter is about 319 times of the mass of the earth and radius is 11 times of radius of the earth, then its acceleration due to gravity is only ………..times of the earth.
    
    1.   2.5 times
    2.   2.6 times
    3.   2.4 times
    4.   2.55 times