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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.

The waves which are used for line of sight (LOS) communication are called:

A Space waves

B Cable waves

C Antenna waves

D None of these

Review Detailed Answer

Correct Answer: Space waves

In n-p-n transistor, p works as______________?

A collector

B emitter

C base

D any of above

Review Detailed Answer

Correct Answer: base

A potential difference is applied across the ends of a wire. If the potential difference is doubled, then the drift velocity of free electron will.

A be quadrupled

B be doubled

C be halved

D remain unchanged

Review Detailed Answer

Correct Answer: be doubled

p-n junction when reversed biased acts as a_______________?

A capacitor

B inductor

C on switch

D off switch

Review Detailed Answer

Correct Answer: off switch

Relation between linear velocity and angular velocity:

A v=rw

B r=vw

C s=r

D ∆s/∆t

Review Detailed Answer

Correct Answer: v=rw

Semi-conductor germanium and silicon are_________________?

A pentavalent

B trivalent

C divalent

D tetravalent

Review Detailed Answer

Correct Answer: tetravalent

If the axis of rotation passes through the body and the body moves around itself then the motion is called:

A Spin motion

B Orbital motion

C Rectilinear motion

D Translatory motion

Review Detailed Answer

Correct Answer: Spin motion

Electrons present in p-type material due to thermal pair generation are_____________?

A majority carriers

B minority carriers

C dual carriers

D blockers

Review Detailed Answer

Correct Answer: minority carriers

Which instrument is used to detect path of visible rays?

A Geiger counter

B Wilson Cloud Detector

C Solid State Detector

D None of the above

Review Detailed Answer

Correct Answer: Wilson Cloud Detector

The velocity of laser light is___________________?

A Less than ordinary light

B More than ordinary light

C Equal to ordinary light

D Different for different colours or frequency

Review Detailed Answer

Correct Answer: Equal to ordinary light

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Physics 914 MCQs [All-Courses]

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All Topics 914

The waves which are used for line of sight (LOS) communication are called:

In n-p-n transistor, p works as______________?

A potential difference is applied across the ends of a wire. If the potential difference is doubled, then the drift velocity of free electron will.

p-n junction when reversed biased acts as a_______________?

Relation between linear velocity and angular velocity:

Semi-conductor germanium and silicon are_________________?

If the axis of rotation passes through the body and the body moves around itself then the motion is called:

Electrons present in p-type material due to thermal pair generation are_____________?

Which instrument is used to detect path of visible rays?

The velocity of laser light is___________________?