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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.

pure resistor circuit the voltage and current are_______________?

A Lagging each other

B They are at 90? phase difference

C They have zero phase difference

D No phase difference

Review Detailed Answer

Correct Answer: They have zero phase difference

The SI unit of force constant is identical with that of__________________?

A Force

B Pressure

C Surface tension

D Loudness

Review Detailed Answer

Correct Answer: Surface tension

An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?

A I = 2I∫Sin(πt/2)

B I = 2I∫Sin(2πt)

C I = 2ISinπt

D I = I∫sin(2πt)

Review Detailed Answer

Correct Answer: I = 2I∫Sin(2πt)

Simple harmonic motion is a type of________________?

A Rotational motion

B Circular motion

C Musical arrangement

D Vibratory motion

Review Detailed Answer

Correct Answer: Vibratory motion

To find the r.m.s value of an alternating current mathematically we need to have ________________?

A Mean value of I2

B Square root of mean value of I2

C Square root of I2

D Square of 1/2

Review Detailed Answer

Correct Answer: Square root of mean value of I2

The frequency of the second pendulum is________________?

A 1 hertz

B 0.5 hertz

C 1.5 hertz

D 2.5 hertz

Review Detailed Answer

Correct Answer: 0.5 hertz

A capacitor of capacitance 30µF is charged by a constant current of 10mA. If initially, the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V ?

A 0.9sec

B 15 sec

C 1.5x105sec

D 0.9x102sec

Review Detailed Answer

Correct Answer: 0.9sec

The force responsible for the vibratory motion of the simple pendulum is_________________?

A mg cosθ

B mg sinθ

C mg tonθ

D mg

Review Detailed Answer

Correct Answer: mg sinθ

Electromagnetic waves emitted from antenna are________________?

A Stationary

B Longitudinal

C Transverse

D All the above

Review Detailed Answer

Correct Answer: Transverse

If the length of the second pendulum becomes four times, then its time period will become________________?

A 4 times

B 6 times

C 8 times

D 2 times

Review Detailed Answer

Correct Answer: 2 times

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Physics 914 MCQs [All-Courses]

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All Topics 914

pure resistor circuit the voltage and current are_______________?

The SI unit of force constant is identical with that of__________________?

An alternating current is represented by the equation I = I∫sinπt which of the following equation represents an alternating current of frequency and amplitude twice that of the above current ?

Simple harmonic motion is a type of________________?

To find the r.m.s value of an alternating current mathematically we need to have ________________?

The frequency of the second pendulum is________________?

A capacitor of capacitance 30µF is charged by a constant current of 10mA. If initially, the capacitor was uncharged what is the time taken for the potential difference across the capacitor to reach 300V ?

The force responsible for the vibratory motion of the simple pendulum is_________________?

Electromagnetic waves emitted from antenna are________________?

If the length of the second pendulum becomes four times, then its time period will become________________?