Newton-Laws-of-Motion-Quiz-5

Newton Laws of Motion Quiz-5

Dear Readers,

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background. 

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced. 

Q1. Two block of masses 7 kg and 5 kg are placed in contact with each other on a smooth surface. If a force of 6 N is applied on the heavier mass, the force on the lighter mass is

•  3.5 N
•  2.5 N
•  7 N
•  5N

Solution

Q2.Which of the four arrangements in the figure correctly shows the vector addition of two forces F₁ and F₂ to yield the third force F₃?

•  
  
  
  
•  
  
  
  
•  
  
  
  
•  
  
  
  

Solution

Q3.  A vehicle of 100 kg is moving with a velocity of 5 m/sec. To stop it in 1/10 sec, the required force in opposite direction is

•  5000 N
•  500 N
•  50 N
•  1000N

Solution

Q4. In which of the following cases forces may not be required to keep the

•  Particle going in a circle
•  Particle going around straight line
•  The momentum of the particle constant
•  Acceleration of the particle constant

Solution

Q5.A bob of mass 0.450 kg hangs from the massless string of a long simple pendulum. A bullet of mass 0.50 kg is fired vertically from below into the bob. The bullet gets embedded into the bob and the combination rises vertically through a height of 1.8 m. If g=10 ms^-2, then the velocity of the bullet is

•  6 ms^-1
•  60 ms^-1
•  600 ms^-1
•  6000 ms^-1

Solution
 

Q6. Two fixed frictionless in inclined plane making an angle 30° and 60° with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B?

•  4.9 ms^-2in horizontal direction
•  9.8 ms^-2in Vertical direction
• Zero
•  4.9 ms^-2in vertical direction

Solution

Q7.A given object takes n times more time to slide down a 45° rough inclined plane as it takes so slide down a perfectly smooth 45° incline. The coefficient of kinetic friction between the object and the incline is

•  1/(1-n² )
•  1- 1/n²
•  √(1-1/n² )
•  √(1/(1-n² ))

Solution

Q8.A ball of mass 400 gm is dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an average force of 100 newton so that it attains a vertical height of 20 m. The time for which the ball remains in contact with the bat is(g=9.8 m/s²)

•  0.12 s
•  0.08 s
•  0.04 s
•  12 s

Solution

Q9.An object is kept on a smooth inclined plane of 1 in l. The horizontal acceleration to be imparted to the inclined plane so that the object is stationary relative to the inclined is

•  g√(l²-1)
•  g(l²-1)
•  g/√(l²-1)
•  g/(l²-1)

Solution

Q10. A ball of mass m moves with speed v and it strikes normally with a wall and reflected back normally. If its time of contact with wall is t, then find force exerted by ball on the wall

•  2mv/t
•  mv/t
•  mvt
• mv/2t

Solution