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22nd March 2016, 12:34 PM
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Join Date: May 2012
Re: Simple Physics Questions and Answers

Friend As on your Demanding Here I am providing Some Simple Physics Questions and Answers Which Asked in Competitive Exams :

1. Which instrument is used to measure altitudes in aircraft's ?
Audiometer
Ammeter
Altimeter
Anemometer


Radiocarbon is produced in the atmosphere as a result of
A. collision between fast neutrons and nitrogen nuclei present in the atmosphere
B. action of ultraviolet light from the sun on atmospheric oxygen
C. action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
D. lightning discharge in atmosphere



It is easier to roll a stone up a sloping road than to lift it vertical upwards because
A. work done in rolling is more than in lifting
B. work done in lifting the stone is equal to rolling it
C. work done in both is same but the rate of doing work is less in rolling
D. work done in rolling a stone is less than in lifting it


The absorption of ink by blotting paper involves
A. viscosity of ink
B. capillary action phenomenon
C. diffusion of ink through the blotting
D. siphon action

4.
Siphon will fail to work if
A. the densities of the liquid in the two vessels are equal
B. the level of the liquid in the two vessels are at the same height
C. both its limbs are of unequal length
D. the temperature of the liquids in the two vessels are the same

5.
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
A. the heating effect of current alone
B. hysteresis loss alone
C. both the heating effect of current and hysteresis loss
D. intense sunlight at noon

6.
Nuclear sizes are expressed in a unit named
A. Fermi B. angstrom
C. newton D. tesla

Which instrument is used to measure depth of ocean ?
Galvanometer
Fluxmeter
Endoscope
Fathometer


Name of the instrument to measure atomspheric pressure ?
Barometer
Barograph
Bolometer
Callipers

Which instrument is used to measure the power of electric circuit ?
Voltmeter
Wattmeter
Wavemeter
Viscometer

Which instrument is used in submarine to see the objects above sea level ?
Pykometer
Polygraph
Photometer
Periscope

Which instrument is used to measure curvature of spherical objects ?
Spectroscope
Spherometer
Spectrometer
Sextant

Which instrument is used to record physical happenings at a distant place ?
Thermostat
Tonometer
Telemeter
Transponder


Metals are good conductors of electricity because
A. they contain free electrons
B. the atoms are lightly packed
C. they have high melting point
D. All of the above

Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
A. will overflow
B. will not rise
C. depressed
D. change its meniscus

Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
A. Pressure and Young's modules
B. Planck's constant and Angular momentum
C. Impulse and moment of force
D. Force and rate of change of linear momentum

If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
A. velocity B. momentum
C. acceleration D. kinetic energy


Pick out the scalar quantity
A. force B. pressure
C. velocity D. acceleration

Rectifiers are used to convert
A. Direct current to Alternating current
B. Alternating current to Direct current
C. high voltage to low voltage
D. low voltage to high voltage’


K. Macmillan invented
Bicycle
Barometer
Calculating Machine
Centigrade Scale

Thomas Alva Edison invented
Cinema
Cine Camera
Computer
Cinematograph

Alfred Nobel invented
X ray
Diesel Engine
Dynamite
Dynamo’

David Hughes invented
Machine Gun
Microphone
Microscope
Motorcycle

Marie and Pierre Curie invented
Radio
Radium
Radar
Refrigerator

Alexander Graham Bell invented
Telephone
Telescope
Television
Tank

Harry Brearley has invented
Electric iron
Electromagent
Stainless Steel
Gramophone


Lux is the SI unit of
A. intensity of illumination
B. luminous efficiency
C. luminous flux
D. luminous intensity

On a rainy day, small oil films on water show brilliant colours. This is due to
A. dispersion B. interference
C. diffraction D. polarization

Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
A. move towards A
B. move towards B
C. move at right angles to the line joining A and B
D. remain at rest

Materials for rain-proof coats and tents owe their water-proof properties to
A. surface tension
B. viscosity
C. specific gravity
D. elasticity


RADAR is used for
A. locating submerged submarines
B. receiving a signals in a radio receiver
C. locating geostationary satellites
D. detecting and locating the position of objects such as aeroplanes


Sound of frequency below 20 Hz is called
A. audio sounds
B. infrasonic
C. ultrasonic
D. supersonics


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