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# Physics Objective Questions For Competitive Exams

## Physics Objective Questions For Competitive Exams

PHYSICS MCQ’s -1

Physics Objective Questions For Competitive Exams | Groups | Banks | RRB’s

Light waves propagates in the form

a) Transverse waves

b) Longitudinal waves

c)  Both

Units of frequency

a)  second/cycle

b)  cycle/second

c)  cycle/min

If the amplitude of waves decreases with respect to time, then such waves are

a) Sound waves

b) Slow amplitude waves

c) Damping waves

maximum displacement of vibrating particle from its mean point known as

a) Amplitude

b) Acceleration

c) Magnitude

Ultra sound wave used to scan the internal organs of the body is

a) Ultra X ray

b) Ultra scanning

c) Ultra Sonography

Sound through the solid is

a) Transverse waves

b) Longitudinal waves

c) Both  `  `

Transverse waves, pick odd

a) Solid

b) Liquids

c)  Air

Humans can hear sound in range of

a) 10 Hz to 20,000 Hz

b) 20 Hz to 20,000 Hz

c) 20 Hz to 40,000 Hz

Stationary waves carries energy from one point to another

a) YES

b) NO

Ultra Sonic waves can be generated in

a) Atom Bombarding

b)  Atom Fussion

c) Piezueo electric effect

The point where the density of the vibrating air molecules is maximum and its rarefaction is minimum

a)  Amplitude

b) Rarefaction

c) Compression

In the Phenomenon of resonance, the natural frequency of two bodies should be

a) Low

b) Equal

c) High

Distance between any two successive compression or rarefaction are called

a) Wave length

b) Wave aptitude

c) Time period

Propagation of sound waves is proposed by

a) Joule

b) Robert Boyle

c) Newton

Smallest unit to measure wavelength is

a)  Angstrom

b)  nm

c)  mm

Inaudible wave beyond 20Hz are

a)  Infrasonic and Ultrasonic

b)  Infrasonic

c) Ultrasonic

Speed of sound in free space is

a) 343 meters per second

b) 0

c) 300 meters per second

To get echo, minimum condition is

a)  Both

b) Separation distance 16.5 mts

c) Time Interval between two sounds atleast 1/10th second

Scientific name of moon and study of moon is

a) Moon, Moonology

b)  Selene, Selenology

c) Planetary, Astrology

The waves which doesn’t require any material medium for propagation called

a)  Sound waves

b) X rays

c)  Electromagnetic waves

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Physics Objective Questions For Competitive Exams

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