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.

Energy needed to magnetize and demagnetize is represented by _________________?

A Hysteresis curve

B Hysteresis loop area

C Hysteresis loop

D Straight line

Review Detailed Answer

Correct Answer: Hysteresis loop area

Very weak magnetic fields are detected by___________________?

A Squids

B Magnetic resonance imaging (MRI)

C Magnetometer

D Oscilloscope

Review Detailed Answer

Correct Answer: Squids

On the basis of band theory of solids the semiconductors have _____________________?

A A party filled valence band and totally empty conduction band

B A completely filled valence band a totally empty conduction band and a very wide forbidden band

C A completely filled valence band a partially filled conduction band and a narrow forbidden band

D A partly filled valence band a totally empty conduction band and a wide forbidden band

Review Detailed Answer

Correct Answer: A completely filled valence band a partially filled conduction band and a narrow forbidden band

With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?

A Decreases

B Increases

C Remains same

D First increases then decreases

Review Detailed Answer

Correct Answer: Increases

Which one has the greatest energy gap ?

A Semi conductor

B Conductor

C Metals

D Non metals

Review Detailed Answer

Correct Answer: Non metals

A completely filled band is called__________________?

A Conduction band

B Valence band

C Forbidden band

D Core band

Review Detailed Answer

Correct Answer: Core band

The band theory of solids explains satisfactorily the nature of_________________?

A Electrical insulators alone

B Electrical conductors alone

C Electrical semi conductors alone

D All of the above

Review Detailed Answer

Correct Answer: All of the above

If the density of atoms remain same along any direction in a crystal is called__________________?

A Symmetry

B Homogeneity

C Isotropy

D Cleavage

Review Detailed Answer

Correct Answer: Homogeneity

The angular position of cells remains the same for a sample of a crystal. This property is called___________________?

A Isotropy

B Cleavage

C Homogeneity

D The external symmetry of form

Review Detailed Answer

Correct Answer: The external symmetry of form

Materials in which valence electrons are tightly bound to their atoms at low temperature are called___________________?

A Semi conductor

B Super conductors

C Insulators

D Conductor

Review Detailed Answer

Correct Answer: Insulators

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Physics 914 MCQs [All-Courses]

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All Topics 914

Energy needed to magnetize and demagnetize is represented by _________________?

Very weak magnetic fields are detected by___________________?

On the basis of band theory of solids the semiconductors have _____________________?

With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?

Which one has the greatest energy gap ?

A completely filled band is called__________________?

The band theory of solids explains satisfactorily the nature of_________________?

If the density of atoms remain same along any direction in a crystal is called__________________?

The angular position of cells remains the same for a sample of a crystal. This property is called___________________?

Materials in which valence electrons are tightly bound to their atoms at low temperature are called___________________?