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Physics

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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 only even harmonics are present

B only odd harmonics are present

C both even and odd harmonics are present

D selected harmonics are present

A 1/4f

B 1/2f

C frequency lower than 20 Hz

D 2f

A sound wave only

B light wave only

C both sound and light waves

D neither sound nor light wave

A diffraction of sound waves

B constructive and destructive interference

C polarization

D destructive interference

A silence zone

B interference

C beats

D resonance

A 313°C

B 586°C

C 819°C

D 1172°C

A 20000 to 30000 hertz

B 10 to 20 hertz

C 2000 to 4000 hertz

D 6000 to 8000 hertz

A increases

B decreases

C remains unchanged

D may increase or decrease

A 1.61 ms-1

B 61.0 ms-1

C 0.61 ms-1

D 2.00 ms-1

A they are transverse waves

B they are stationary waves

C they require material medium for propagation

D they do not have enough energy

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In open organ pipe___________________?

A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

Doppler effect applies to____________________?

Beats are the results of____________________?

The periodic alternation of sound between maximum and minimum loudness are called___________________?

The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

The normal ear is the most sensitive in the frequency range___________________?

On loading the prong of a tuning form with wax its frequency____________________?

Increase in velocity of sound in the air for 1°C rise in temperature is_________________?

Sound waves do not travel in vacuum because ___________________?