vr-june

1 st June 2019
TALENT
ACADEMY VIJAYAREKHA Volume VII Issue No. 06 PSC a’-c-]-co£m amknI
God’s particle is the
pseudonym of _____
Higgs Boson
The 5 th state of matter is
Bose-Einstein condensate
In which state of matter
diffusion is greater ?
Gas
Exchange Particle in Quark-
Quark Interaction:
Gluon
Special Theory of Relativity
was proposed in:
1905
The fundamental unit of
length is
Metre
The unit of acceleration is
m/s 2
One ‘Pico meter’ is equal
-12
to - 10 m
S.I. Unit of temperature is
Kelvin
The Unit of Intensity of
Sound is : Decibel
One RADIAN is: 57.3 0
Units Related
to Motion
Momentum = Mass _______
Velocity
Einstein’s formula of massenergy
relation is
E = mc 2
The shape of acceleration
versus mass graph for
constant force is
Hyperbola
Who discovered the law of
gravity?
Isaac Newton
Weight
Yellow is a combination of
____ primary colors.
Red, Green
What is the minimum
distance from the object for
a healthy eye to have clear
vision?
25 cm
IMAGES
Diverging lens produces
______ type of images.
Small virtual image
The image formed by the
objective lens of a
compound microscope is
Real and enlarged
The image of an object
formed on the retina of
human eye is:
Real and inverted
Focal length of a plane mirror
is :
Infinite
Which type of mirror is used
as a ‘rear - view’ mirror in
vehicles?
Convex
A man pushes a metal block and fails to displace it. He
does no work at all
When a body having mass ‘M’ is placed at the centre of
earth, its weight will be : Zero
As we go from the equator to the poles, our weight
Increases
Uses of Lens
Type of lens used in
magnifying glass
Convex lens
The lens used to rectify
the disease, ‘Myopia’:
Concave lens
If a convex lens is placed in
water, its focal length
Increases
The tank appears shallow
than its actual depth, due to:
Refraction
The critical angle of a wave
will be refracted to:
90 degree
Phenomenon behind the
formation of rainbow :
Dispersion of light
Sky is blue in colour because
of : Scattering
The working principle of
Optical Fibre Cable (OFC) is
Total internal reflection
The concept of radio
transmission was first
demonstrated by the famous
Indian scientist
J.C. Bose
_______ occurs when source
×
of light approach an observer
Blue Shift
Which temperature is called
absolute zero?
-273.15 0 C
100 o C = Kelvin.
373
Celsius and Fahrenheit scale
show the same temperature
at: -40
High boiling point of water
is due to: Hydrogen bonding
amongst water molecules
A person is comfortable
while sitting near a fan in
summer because - Rate of
evaporation increases
For liquids, both Coefficient
of Viscosity and Surface
Tension: Decreases with
increase in temperature
The velocity of sound is
maximum in : Solid
The change of frequency
experienced by the receiver
either because of the
relative motion of the
source or receiver or both :
Doppler effect
The scientific principle
behind the working of a
transformer is
Mutual induction
(Electro Magnetic Induction)
Microphone - converts sound to electric signal
Rheostat - regulates the resistance or current in a
circuit
Ammeter - used to measure electric current
INSTRUMENTS
Hygrometer - used to measure atmospheric humidity
Lactometer - used to estimate the purity of milk
Electric transformer is
used to - Change voltage
Which lamp has the highest
energy efficiency ?
LED Lamp
A fuse wire is characterized
by
High resistance and low
melting point
In the armature and the field
magnet of a generator; the
stationary part is the
Stator
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