Physics 914 MCQs [All-Courses]

Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

In the electron microscope, electric & magnetic fields are used as_______________?

A Electromagnetic gun

B Source of electromagnetic waves

C Deflecting charged particle

D Converging source of electrons

Review Detailed Answer

Correct Answer: Converging source of electrons

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

Review Detailed Answer

Correct Answer: May be at rest or in uniform motion

In an electron microscope, we use energetic particles because of______________?

A Penetrating power is high

B Kinetic energy is large

C Wavelength is very short

D All the above reasons

Review Detailed Answer

Correct Answer: Wavelength is very short

Torque acting on a body determines_______________?

A Acceleration

B Linear acceleration

C Angular acceleration

D Direction of motion of the body

Review Detailed Answer

Correct Answer: Angular acceleration

If a diffraction grating is placed in the path of a light beam it reveals______________?

A Wave property

B Particle property

C Energy particle

D Electromagnetic wave property

Review Detailed Answer

Correct Answer: Wave property

SI unit of torque is______________?

A N.m

B joule

C Both a and b are correct

D Neither a nor b is correct

Review Detailed Answer

Correct Answer: N.m

In Davisson-Germer experiment the diffracted proton from crystal shows______________?

A Particle property

B Wave property

C Light property

D Quantum property

Review Detailed Answer

Correct Answer: Wave property

The dimension of torque is______________?

A [ML2T-2]

B [MLT-2]

C [ML2T]

D [ML-2T-2]

Review Detailed Answer

Correct Answer: [ML2T-2]

The velocity of a particle of mass m of de-Broglie wavelength λ is______________?

A v = 3 ×× 106 ms-1

B v = 2 ×× 10 ms-1

C v = 2 ×× 6 ms-1

D v = 2 ×× 106 ms-1

Review Detailed Answer

Correct Answer: v = 2 ×× 106 ms-1

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

Review Detailed Answer

Correct Answer: All A, B and C are correct

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Physics 914 MCQs [All-Courses]

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All Topics 914

In the electron microscope, electric & magnetic fields are used as_______________?

A body in equilibrium__________________?

In an electron microscope, we use energetic particles because of______________?

Torque acting on a body determines_______________?

If a diffraction grating is placed in the path of a light beam it reveals______________?

SI unit of torque is______________?

In Davisson-Germer experiment the diffracted proton from crystal shows______________?

The dimension of torque is______________?

The velocity of a particle of mass m of de-Broglie wavelength λ is______________?

Torque is defined as______________?