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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.

As a result of annihilation of electron and positron, number of γ–ray (Gama ray) photons are: ________?

A Two

B Three

C Four

D One

Review Detailed Answer

Correct Answer: Two

The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________?

A 6.2 x 10-10m

B 9.1 x 10-18m

C 3.11 x 10-10m

D 4 x 10-10m

Review Detailed Answer

Correct Answer: 6.2 x 10-10m

A.C. and D.C. have the same __________?

A Affect in charging a capacitor

B Affect in charging a battery

C Affect while passing through an inductance

D Heating effect through a resistance

Review Detailed Answer

Correct Answer: Heating effect through a resistance

The characteristic X-rays spectrum is due to_____________?

A The illumination of the target metal by ultra-violet radiation

B The bombardment of the target by protons

C The bombardment of target by electrons

D The absorption of radiation by the target metal

Review Detailed Answer

Correct Answer: The bombardment of target by electrons

A low resistance which can bypass a current is: _____________?

A Divider

B Shunt

C Multiplier

D None of these

Review Detailed Answer

Correct Answer: Shunt

1 Weber / m² is equal to __________?

A One gauss

B 3×10¹⁰ gauss

C 10⁴ gauss

D 1/3×10^-8 gauss

Review Detailed Answer

Correct Answer: 10⁴ gauss

An electric motor could be used as a: ___________?

A Battery

B Capacitor

C Dynamo

D Transformer

Review Detailed Answer

Correct Answer: Dynamo

The dimension of velocity are __________?

A LT

B LMT

C LMT^-1

D LT^-1

Review Detailed Answer

Correct Answer: LT

An example of scalar quantity is _________?

A Displacement

B Speed

C Velocity

D Acceleration

Review Detailed Answer

Correct Answer: Speed

For anti-parallel vectors angle is equal to ____________?

A 90°

B 180°

C 270°

D None of these

Review Detailed Answer

Correct Answer: 180°

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Physics 914 MCQs [All-Courses]

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All Topics 914

As a result of annihilation of electron and positron, number of γ–ray (Gama ray) photons are: ________?

The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________?

A.C. and D.C. have the same __________?

The characteristic X-rays spectrum is due to_____________?

A low resistance which can bypass a current is: _____________?

1 Weber / m² is equal to __________?

An electric motor could be used as a: ___________?

The dimension of velocity are __________?

An example of scalar quantity is _________?

For anti-parallel vectors angle is equal to ____________?