Sail E0 Webinar

General Knowledge > General Science

PHYSICS MCQs

Total Questions : 3767 | Page 18 of 377 pages
Question 171. What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?
  1.    Remains constant
  2.    Becomes zero
  3.    Increases exponentially
  4.    None of the above
 Discuss Question
Answer: Option A. -> Remains constant
Question 172. The force that keeps a body in a circular motion called
  1.    The centripetal force
  2.    The centrifugual force
  3.    The frictional force
  4.    All the above
 Discuss Question
Answer: Option A. -> The centripetal force
Question 173. It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because
  1.    Weights of buckets are balanced
  2.    Centre of gravity falls within the body
  3.    Centre of gravity and centre of equilibrium fall within the feet
  4.    Resultant weight of buckets is zero
 Discuss Question
Answer: Option C. -> Centre of gravity and centre of equilibrium fall within the feet
Question 174. A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments
  1.    Is zero
  2.    Depends on the total mass of all the fragments
  3.    Depends on the speeds of various fragments
  4.    Is infinity
 Discuss Question
Answer: Option A. -> Is zero
Question 175. The working of a rocket is based on the principle of:
  1.    Conservation of momentum
  2.    Conservation of mass
  3.    Conservation of energy
  4.    Conservation of angular momentum
 Discuss Question
Answer: Option A. -> Conservation of momentum
Question 176. A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?
  1.    Both the spheres will reach the ground simultaneously.
  2.    A will reach the ground first.
  3.    B will reach the ground first.
  4.    The question is incomplete because the masses of the spheres are not given.
 Discuss Question
Answer: Option A. -> Both the spheres will reach the ground simultaneously.
Question 177. Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen?
  1.    The heavier mass will reach greater height
  2.    The lighter mass will reach greater height
  3.    Both will reach the same height
  4.    Any of them may reach greater height
 Discuss Question
Answer: Option C. -> Both will reach the same height
Question 178. An object covers distance which is directly proportional to the square of the time. Its accelaration is
  1.    Increasing
  2.    Decreasing
  3.    Zero
  4.    Constant
 Discuss Question
Answer: Option D. -> Constant
Question 179. The dimension of which of the following is the same as that of impulse ?
  1.    Volume
  2.    Momentum
  3.    Torque
  4.    Change in the rate of momentum
 Discuss Question
Answer: Option B. -> Momentum
Question 180. A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun.
  1.    2
  2.    0.1
  3.    4
  4.    0.05
 Discuss Question
Answer: Option D. -> 0.05

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : Overview of Finance & Accounts Department Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024
Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024
Chapter 1.1 : Personnel Functions- An overview Chapter 1 : Personnel Management SAIL E0 - GFM 2024
GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024
CBT Mixed Test 1 GPOE/GPA SAIL E0 2024