Free & Premium Study Material · Online Courses · Instant Download+91 99398 78821 · support@downloadstore.in
downloadstoreSTUDY MATERIAL
LoginRegister🛒0

Mechanics

219 MCQ questions with answers and explanations · page 2 of 9

Test yourself▶ 25 question test▶ 50 question test

Q26. Which of the following is the SI unit of thermodynamic temperature?

  1. AFahrenheit
  2. BCelsius
  3. Cradian
  4. DKelvin
Show answer & explanation

Answer: D) Kelvin

Q27. Match List-I with List-II and select the correct answer using the code given below the lists. List-I List-II A High velocity 1. Mach B Wavelength 2. Angstrom C Pressure 3. Pascal D Energy 4. Joule

  1. AABCD 2 1 3 4
  2. BABCD 1 2 4 3
  3. CB C D 1 2 3 4
  4. DB C D 2 1 4 3
Show answer & explanation

Answer: C) B C D 1 2 3 4

Q28. Match List-I with List-II and select the correct answer using the code given below the lists. List-I (Physical Quantity) List-II (Unit) A Distance 1. Mole B Amount of substance 2. Coulomb C Amount of electric charge 3. Light year D Energy 4. Watt hour

  1. AB C D 3 1 2 4
  2. BB C D 3 2 1 4
  3. CB C D 4 2 1 3
  4. DB C D 4 1 5 3
Show answer & explanation

Answer: A) B C D 3 1 2 4

Q29. Match List-I with List-II- List-I (Physical Quantity) List-II (Unit) A Acceleration 1. Joule B Force 2. Newton second C Work done 3. Newton D Impulse 4. Metre per second2

  1. AB C D 1 2 3 4
  2. BB C D 2 3 4 1
  3. CB C D 3 4 1 2
  4. DB C D 4 3 1 2
Show answer & explanation

Answer: D) B C D 4 3 1 2

Q30. FollowingInFromWho,LikeOnederivativemagnitudeNoIs ,

  1. Adensity
  2. BMass
  3. Cvolume
  4. Dmove
Show answer & explanation

Answer: B) Mass

Q31. AccelerationknowntoOfCorrectFormulaWho,LikeIs ,

  1. Aa=(vu)/t
  2. Ba=u+vt
  3. Ca=(v+u)/t
  4. Da=(v+u)/2
Show answer & explanation

Answer: A) a=(vu)/t

Q32. SubstanceOfImpulseAndvelocityOfRatioFromWho,CPhysicalAmountgetofcasteIs ,

  1. Avelocity
  2. BAcceleration
  3. CMass
  4. DForce
Show answer & explanation

Answer: C) Mass

Q33. What is the dimension of Planck's constant?

  1. Aenergy
  2. BLinear motion
  3. Cangular velocity
  4. DForce
Show answer & explanation

Answer: C) angular velocity

Q34. A girl is swinging while sitting on a swing. When the girl stands up, the time period of the oscillations is-

  1. Awill decrease
  2. Bwill be more
  3. Cwill depend on the height of the girl
  4. Dwill remain unchanged
Show answer & explanation

Answer: A) will decrease

Q35. A boy suddenly sits down on a rotating round table. What effect will this have on the table's angular velocity?

  1. Awill decrease
  2. Bwill increase
  3. Cwill remain the same
  4. DNothing can be said
Show answer & explanation

Answer: A) will decrease

Q36. If the velocity of a moving object is doubled, then its-

  1. AThe acceleration doubles
  2. Bthe kinetic energy doubles
  3. Cthe kinetic energy becomes four times
  4. DThe load doubles.
Show answer & explanation

Answer: C) the kinetic energy becomes four times

Q37. There is a difference between the mass and weight of a body because-

  1. AMass is variable while weight is constant
  2. BMass remains constant, while weight varies
  3. Cboth are true
  4. Dboth are wrong
Show answer & explanation

Answer: B) Mass remains constant, while weight varies

Q38. The position and direction of any object, whether stationary or moving, remain unchanged unless an external force acts on it. This is—

  1. ANewton's first law of motion
  2. BNewton's second law of motion
  3. CNewton's third law of motion
  4. DGalileo's law of motion
Show answer & explanation

Answer: A) Newton's first law of motion

Q39. The acceleration produced in a body by an unbalanced force-

  1. Ais inversely proportional to force
  2. Bis directly proportional to the force
  3. Cindependent of the force acting on it
  4. Dis zero
Show answer & explanation

Answer: B) is directly proportional to the force

Q40. According to Newton's third law of motion and the force associated with the reaction-

  1. Ashould always be focused on the same object
  2. BCan be mounted on different objects
  3. Cshould always be applied to different objects
  4. DThe magnitudes of these do not have to be equal, but they must have the same direction.
Show answer & explanation

Answer: C) should always be applied to different objects

Q41. "For every action there is an equal and opposite reaction." This is

  1. ANewton's first law of motion
  2. BNewton's second law of motion
  3. CNewton's third law of motion
  4. Dnone of the above
Show answer & explanation

Answer: C) Newton's third law of motion

Q42. Swimming in water is possible due to which law of Newton's motion?

  1. AFirst Law
  2. BSecond Law
  3. CThird Law
  4. DAll of the above
Show answer & explanation

Answer: C) Third Law

Q43. body will remain at rest unless acted upon by an external force. Whose statement is this?

  1. ANewton
  2. BEinstein
  3. CArchimedes
  4. DGalileo
Show answer & explanation

Answer: A) Newton

Q44. The definition of force comes from Newton's-

  1. Afrom the first law of motion
  2. Bfrom the second law of motion
  3. Cfrom the third law of motion
  4. Dfrom the law of gravity
Show answer & explanation

Answer: A) from the first law of motion

Q45. What is the property of a body called by which it resists any change in its state of rest or uniform motion in a straight line?

  1. Aimmobility
  2. Binertia
  3. Ctotal weight
  4. Dinactivity
Show answer & explanation

Answer: B) inertia

Q46. Newton's first law is also called-

  1. Alaw of moment
  2. Blaw of inertia
  3. CLaw of Energy
  4. Dlaw of momentum
Show answer & explanation

Answer: B) law of inertia

Q47. Due to which force does a horse pulling a cart move forward?

  1. Athe force exerted by the cart on the horse
  2. Bthe force exerted by the horse on the cart
  3. Cthe force exerted by the horse on the earth with its feet
  4. Dthe force exerted by the earth on the horse's feet
Show answer & explanation

Answer: D) the force exerted by the earth on the horse's feet

Q48. When a moving bus suddenly applies its brakes, the passengers inside are thrown forward. What can explain this?

  1. Arelativity theory
  2. BNewton's first law
  3. CNewton's second law
  4. DNewton's third law:
Show answer & explanation

Answer: B) Newton's first law

Q49. On what principle does a rocket work?

  1. ANewton's third law
  2. BNewton's first law
  3. CNewton's second law
  4. DArchimedes' principle
Show answer & explanation

Answer: A) Newton's third law

Q50. If the horse suddenly starts moving, the rider is likely to fall because of-

  1. Amoment of inertia
  2. BLaw of conservation of mass
  3. CRest inertia
  4. Dthird law of motion
Show answer & explanation

Answer: C) Rest inertia

1234…9
← MagnetismMiscellaneous Physics →
💬