In this article, we are going to give you the** Most Useful Physics MCQs For Entry Test with answers,** These are the **Physics Mcqs** that are collected from various sources such as** NTS Past papers, FPSC past papers, and entrance test of different universities of Pakistan**. These

*Physics MCQs*will help the students to get higher marks in physics subject.

**Physics MCQs For Entry Test**

**1. The rectangular coordinate system is also called?**

A. Polar coordinate system

**B. Cartesian coordinate system**

C. Cylindrical coordinate system

D. Spherical coordinate system

**2. Maximum number of rectangular components are?**

A. 1

B. 2

**C. 3**

D. 4

**3. Cosθi^ + Sinθj^ is a?**

A. Vector

B. Position Vector

C. Vector in the direction at angle θ with an x-axis

**D. The unit vector in the direction at angle θ with an x-axis**

**4. Maximum number of components of a vector may be?**

A. 1

B. 2

C. 3

**D. Infinite**

**5. Which one is not correct for a vector A= 2i+2j+3k?**

A. Has direction 45° with an x-axis

B. Has magnitude 2

C. Has magnitude 2 and direction °=45° with a y-axis

**D. Has magnitude -2**

**6. The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is?**

A. 30°

B. 60°

C. 90°

**D. 120°**

**7. Three coplanar forces acting on a body keep it in equilibrium. They should therefore be?**

**A. Concurrent
**B. Non-concurrent

C. Parallel

D. Non-parallel

**8. Which of the following pairs does not have identical dimensions?**

A. Torque and energy

B. Momentum and impulse

C. Energy and work

**D. Mass and moment of inertia**

**9. It is easier to turn a steering wheel with both hands than with a single hand because?**

A. Accelerating force increases on the wheel

B. Two forces act on the wheel

C. Two hands provide a firm grip

**D. The couple acts on the wheel**

**10. The cross product i^ x j^ is equal to?**

A. Zero

B. One

C. i^

**D. k^**

**NTS Electrical Engineering MCQs**

**11. The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is?**

A. 2i^ – 2j^ + k^

B. (2i^ – 2j^ +k^)/9

**C. (2i^ – 2j^ +k^)/3**

D. (2i^ – 2j^ +k^)/5

**12. The cross product of two vectors is a negative vector when?**

A. They are parallel vectors

B. They are anti parallel vectors

C. They are a perpendicular vector

**D. They are rotated through 270°**

**13. In which quadrant, the only value of tan will be positive?**

A. First

B. Second

C. Third

**D. Both 1st and 3rd**

**14. The magnitude of i^. (j^ x k^) is?**

A. 0

**B. 1**

C. -1

D. i^

**15. If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then?**

**A. A. B = Ax Bx + Ay By + Az Bz
**B. A. B = Ax By + Ay Bz + Az By

C. A. B = Ay Bz + Az By + Az Bx

D. A. B = Ax Bz + Ay By + Az Bx

**16. A central force is that which?**

A. Can produce torque

**B. Cannot produce torque**

C. Some time can produce torque some time cannot

D. Has no relation with torque

**17. What is the angle that the given vector makes with y-axis and A=2i+3j?**

A. 30°

**B. 60°**

C. 90°

D. 120°

**18. In which quadrant the two rectangular components of a vector have same sign?**

A. 1st

B. 2nd

**C. Both 1st and 3rd**

D. 4th

**19. Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as?**

**A. A.B/A
**B. A.B/B

C. A.cosθ

D. Both a and b are correct

**20. Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then?**

A. B is anti-parallel to A

**B. B is a negative vector of A**

C. B has a negative magnitude

D. B is perpendicular to A

**21. If A=B, which of the following is not correct?**

**A. A.B = A^ B^
**B. |A| = |B|

C. |A^| = |B^|

D. AB^ = BA^

**22. I ^. (j^ x k^) is equal to?**

**A. 1
**B. i^

C. j^

D. k^

**23. The direction of the vector product is given by?**

A. Head to tail rule

**B. Right-hand rule**

C. Left-hand rule

D. Triangular rule

**24. If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along?**

A. West

B. North

**C. Down**

D. Up

**25. Null vector is a vector which has?**

A. Zero magnitude

B. No specified direction

**C. Both A and B are correct**

D. Both A and B are not correct

**26. Which one is a unit vector?**

A. ??3 i^ + ??3 j^ + ??3 k^

B. 1/??3 i^ + 1/??3 j^ +1/ ??3 k^

C. ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^

**D. Both B and C are correct**

**27. An angle between two vectors A and B can be determined by?**

**A. Their dot product
**B. Their cross product

C. Head to tail rule

D. Right-hand rule

**28. The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is?**

A. 30°

**B. 45°**

C. 60°

D. 180°

**29. Torque is defined as?**

A. Turning effect of force

B. Cross product of position vector and force

C. Product of force and moment arm

**D. All A, B and C are correct**

**30. The dimension of torque is?**

**A. [ML2T-2]
**B. [MLT-2]

C. [ML2T]

D. [ML-2T-2]

**31. SI unit of torque is?**

**A. N. m
**B. joule

C. Both a and b are correct

D. Neither a nor b is correct

**32. Torque acting on a body determines?**

A. Acceleration

B. Linear acceleration

**C. Angular acceleration**

D. Direction of motion of the body

**33. A body in equilibrium?**

A. Always at rest

B. Always in uniform motion

**C. May be at rest or in uniform motion**

D. May be at rest or in motion

**34. A body will be in complete equilibrium when it is satisfying?**

A. 1st condition of equilibrium

B. 2nd condition of equilibrium

**C. Both 1st and 2nd condition of equilibrium**

D. Impossible

**35. Which one is not a type of dynamic equilibrium?**

A. Rotational equilibrium

B. Translational equilibrium

**C. Static equilibrium**

D. Both A and C are correct answer

**36. According to which one of following law the density of atom is uniform?**

**A. J.J.Thomson model
**B. Rutherfords model

C. Bohrs model

D. All of the above laws contradict the statement

**37. In the nucleus of uranium, the number of neutrons will be?**

A. 92

B. 235

C. 143

**D. Different for different isotopes**

**38. During fusion of hydrogen into helium?**

A. Energy is absorbed

**B. Energy is released**

C. Mass is increased due to energy absorption

D. Mass is reduced due to the energy released

**39. One AMU is equal to?**

A. 1.66 x 10-27kg

B. 166 x 10-15ng

C. 166 x 10-20g

**D. All of above**

**40. For chain reaction to build up the size of the radioactive target should be?**

**A. Greater than the critical size
**B. Less than the critical size

C. Equal to the critical size

D. All of above can build up a change reaction

**41. Antimatter consists of ?**

A. Antiproton

B. Antineutron

C. Positron

**D. All of above**

**42. Neutron and proton are commonly known as?**

**A. Nucleon
**B. Meson

C. Boson

D. Quartz

**43. Which one of the following radiation possesses maximum penetrating power?**

A. X-rays

B. B-rays

**C. γ-rays**

D. All have the equal penetrating power

**44. Electrons?**

A. Can exist inside the nucleus

B. Cannot exist inside the nucleus

C. Can exist both inside and outside the nucleus

**D. Do not know**

**45. Radioactivity is a (A) Spontaneous activity (B) Chemical property?**

A. A & B

B. B & C

**C. C & A**

D. A B & C

**46. The energy liberated when one atom of U-235 undergoes fission reaction is?**

**A. 200MeV
**B. 40MeV

C. 30MeV

D. 20MeV

**47. Transuranic elements have an atomic number?**

A. Greater than 72

B. Greater than 82

**C. Greater than 92**

D. Greater than 102

**48. Nuclear forces exist between?**

A. Proton-proton

B. Proton-neutron

C. Neutron-neutron

**D. All of the above**

**49. Mass defect per nucleon is?**

A. The binding energy of the nucleus

**B. Packing fraction**

C. The average energy of the nucleus

D. All of above are one and the same thing

**50. The bombardment of nitrogen with alpha particles will produce?**

A. Neutron

**B. Proton**

C. Electron

D. Positron

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