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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.

A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?

A (R+2πfL)

B R+1/2πfL

C (R2+f2L2)

D (R2+4π2f2L2)

Review Detailed Answer

Correct Answer: (R2+4π2f2L2)

The length of the second pendulum is_________________?

A 100 cm

B 99 cm

C 99.2 cm

D 98 cm

Review Detailed Answer

Correct Answer: 99.2 cm

If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?

A Remains same

B Brightness increases

C Brightness decreases

D No light

Review Detailed Answer

Correct Answer: Brightness increases

The product of the frequency and time period is equal to_________________?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 1

A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________?

A 32Ω

B 62Ω

C 50Ω

D 100Ω

Review Detailed Answer

Correct Answer: 32Ω

The energy of SHM is maximum at_______________?

A Mean position

B Extreme position

C In between mean and extreme

D All positions during SHM

Review Detailed Answer

Correct Answer: All positions during SHM

In the capacitive circuit the current___________________?

A Lags behind voltage by π/2

B Is in phase with voltage

C Opposite in phase of voltage by π

D Leads forward the voltage by π/2

Review Detailed Answer

Correct Answer: Leads forward the voltage by π/2

A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?

A Infinite

B T/g

C Zero

D g/T

Review Detailed Answer

Correct Answer: Infinite

When A.C current passes through a capacitor then the current relationship will be_______________?

A The current lead voltage by phase angle is 90 degrees

B The voltage leads current by phase angle is 90 degrees

C The current lead voltage by phase angle is 45 degrees

D The voltage leads current by phase angle is 45 degrees

Review Detailed Answer

Correct Answer: The current lead voltage by phase angle is 90 degrees

When the amplitude of a wave becomes double its energy become_________________?

A Double

B Four times

C One half

D None time

Review Detailed Answer

Correct Answer: Four times

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Physics 914 MCQs [All-Courses]

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All Topics 914

A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?

The length of the second pendulum is_________________?

If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?

The product of the frequency and time period is equal to_________________?

A 100µF capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________?

The energy of SHM is maximum at_______________?

In the capacitive circuit the current___________________?

A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?

When A.C current passes through a capacitor then the current relationship will be_______________?

When the amplitude of a wave becomes double its energy become_________________?