The Chennai School Of banking

GENERAL SCIENCE Physics-04

Question No : 1

Among the following radiations, which has the highest energy?
(1) Visible
(2) X-ray
(3) Ultra-violet
(4) Infra-red

Question No : 2

Hydrogen bomb was developed by
(1) Edward Teller
(2) Bernor Bon Bron
(3) J. Robert Opan Heemar
(4) Samual Cohen

Question No : 3

The conductivity of a semi-conductor at zero degree Kelvin is
$(1) 10^{5}ohm$
$(2)10^{-1}ohm$
$(3) 10^{-5}ohm$
(4) zero

Question No : 4

A radio station broadcast at 30 metre band. The frequency of the carrier wave transmitted by this station is:
(1) 10 KHz
(2) 100 KHz
(3) 10 MHz
(4) 100 MHz

Question No : 5

The wave length extension of visible light is
(1) Between 200-900 nm
(2) Between 250–850 nm
(3) Between 300-800 nm
(4) Between 390-780 nm

Question No : 6

In the night, wind blows fast, dew is not formed because
(1) Rate of evaporation is fast
(2) Moisture in air is low
(3) Temperature is high
(4) Sky is not clear

Question No : 7

Which of the following pairs is correctly matched?
C. X-ray                           3. Edward Jenner
D. Smallpox                     4. W.K. Roentgen
Code:
A   B    C   D
(1) 2    1    4    3
(2) 2    3    4    1
(3) 2    4    1    2
(4) 4    1    2    3

Question No : 8

When beams of red, blue and green lights fall on the same spot, the colour of the light becomes:
(1) Violet
(2) Red
(3) Yellow
(4) White

Question No : 9

An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?
(1) Angular Momentum
(2) Linear Velocity
(3) Angular Displacement
(4) None of these

Question No : 10

Radio telescopes are better than optical telescopes because
(1) they can detect faint galaxies which no optical telescope can
(2) they can work even in cloudy conditions
(3) they can work during the day and night
(4) All of the above

Question No : 11

As per the WHO, the safe noise level for a city is
(1) 45 db
(2) 50 db
(3) 55 db
(4) 60 db

Question No : 12

Radiocarbon is produced in the atmosphere as a result of
(1) collision between fast neutrons and nitrogen nuclei present in the atmosphere
(2) action of ultraviolet light from the sun on atmospheric oxygen
(3) action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
(4) lightning discharge in atmosphere

Question No : 13

Bats can fly during dark nights and also prey. This is because
(1) The pupil of their eyes is large
(2) Their night vision is very good
(3) Every birds can do this
(4) They produce ultrasonic waves and are guided by them.

Question No : 14

The energy of wind is
(1) Only potential
(2) Only kinetic
(3) Electrical
(4) Potential and kinetic both

Question No : 15

Which of the following is used for regulated electric supply?
(1) Zener diode
(2) Junction diode
(3) Gun diode
(4) Tunnel diode

Question No : 16

Why the needle of iron swims on Water surface when it is kept gently ?
(1) It will remain under the water when it will displace more water than its weight
(2) The density of needle is less than that of water
(3) Due to surface tension
(4) Due to its shape

Question No : 17

The cooling by a desert cooler is based on
(1) Hot air replacement
(2) Air dehydration
(3) Evaporative cooling
(4) Air rehydration

Question No : 18

Who is the discover of Penicillin?
(1) Alexander Graham Bell
(2) Alexander Fleming
(3) Christopher Macdonald
(4) Albert Einstein

Question No : 19

The important nuclear fuel available in India in abundance is:
(1) Uranium
(2) Thorium
(3) Iridium
(4) Plutonium

Question No : 20

Static science is associated with
(1) Dynamic situation
(2) Situation of rest
(3) Mental situation
(4) Data analyzing

Question No : 21

The reason of mirage is
(1) Interference of light
(2) Diffraction of light
(3) Polarization of light
(4) Total internal reflection of light

Question No : 22

Which one of the following is the unit of measure of the thickness of the ozone layer of the atmosphere?
(1) Knot
(2) Dobson
(3) Poise
(4) Maxwell

Question No : 23

The nature of fuse wire is
(1) Low melting point
(2) High melting point
(3) High conductivity
(4) None of these

Question No : 24

When pressure is increased, the melting point of ice
(1) Increases
(2) Does not change
(3) Decreases
(4) Depends on the impurities in the ice

Question No : 25

If a boy is sitting in a train, which is moving at a constant velocity throws a ball straight up into the air, the ball will
(1) fall in front of him
(2) fall behind him
(3) fall into hand
(4) None of these

Question No : 26

Who invented PlayStation?
(1) Wright brothers
(2) Reynold B. Johnson
(3) Assen Jordanoff
(4) Ken Kutaragi

Question No : 27

The atmosphere exerts enormous pressure on us. But, we do not feel it because
(1) Our blood exerts a pressure slightly more than that of the atmosphere.
(2) We are used to it
(3) Our bones are very strong and can withstand the pressure
(4) The surface are of our head is very small.

Question No : 28

Why does a fountain pen leak in aeroplane flying at a height?
(1) Because of reduced viscosity of the ink in the pen
(2) Because of increased viscosity of the ink in the pen
(3) Because of higher atmospheric pressure outside the pen
(4) Because of lower atmospheric pressure outside the pen

Question No : 29

The path of a projectile is called its _____
(1) Altitude
(2) Range
(3) Trajectory
(4) Flight

Question No : 30

Who invented the nuclear reactor?
(1) Enrico Fermi
(3) Sandford Fleming
(4) Benoit Fourneyron

Question No : 31

If in a motion, the axis of the rotation does not pass through the object, then the motion is called _____.
(1) Spin motion
(2) Oscillatory motion
(3) Translatory motion
(4) Orbital motion

Question No : 32

Atmospheric pressure is measured by _____
(1) Barometer
(2) Hexameter
(3) Nanometer
(4) Glaxometer

Question No : 33

Physical quantities, which have _____ only and no _____ are called scalar quantities.
(1) direction, magnitude
(2) magnitude, direction
(3) speed, velocity
(4) velocity, speed

Question No : 34

The light with the shortest wavelength is
(1) Red
(2) Yellow
(3) Blue
(4) Violet

Question No : 35

What will happen to the force between the two positive charges which are released after being held near each other?
(1) Force will increase
(2) Force will decrease
(3) Force will stay the same
(4) Force first increases to reach maximum before starting to decrease

Question No : 36

What is the fundamental unit of amount of a substance?
(1) Mole
(2) Candela
(3) Kelvin
(4) Meter

Question No : 37

If a ball is thrown up, which of the following does not change?
(1) Acceleration due to gravity
(2) Speed
(3) Potential energy
(4) Distance

Question No : 38

Who discovered theory of relativity?
(1) Isaac Newton
(2) Albert Einstein
(3) Niel Bohr

Question No : 39

During the motion of a projectile fired from the earth surface, _____
(1) its kinetic energy remains constant
(2) its momentum remains constant
(3) vertical component of its velocity remains constant
(4) horizontal component of its velocity remains constant

Question No : 40

Which of the following pairing is incorrect
(1) Hygrometer – Water vapour content of the atmosphere
(2) Lactometer – Specific gravity of liquids
(3) Anemometer – Speed of the wind
(4) Seismograph – Earthquakes

Question No : 41

An air bubble in water will act like a:
(1) Convex mirror
(2) Convex lens
(3) Concave mirror
(4) Concave lens

Question No : 42

Kinetic energy depends on
(1) the velocity or speed of the moving body
(2) the mass of the moving body
(3) the pressure of the moving body
(4) both mass and velocity of the moving body

Question No : 43

If electric resistance is to be decreased, then the number of resistances should be connected in _____
(1) Series
(2) Parallel
(3) Mixed arrangement
(4) None of these

Question No : 44

Why does ice covered in sawdust not melt quickly?
(1) Sawdust does not allow the air to touch the ice
(2) The water is absorbed by sawdust
(3) Sawdust is a bad conductor of heat
(4) Sawdust is good conductor of heat

Question No : 45

Light propagates in the form of ______
(1) Transverse wave
(2) Longitudinal wave
(3) Both (1) and (2)
(4) None of these

Question No : 46

Convex and Concave mirrors are examples of?
(1) Plane mirrors
(2) Spherical mirrors
(3) Inverted mirrors
(4) Erect mirror

Question No : 47

(1) Ray Tomlinson
(2) Tim Berners-Lee
(3) William Cullen
(4) James Dewar

Question No : 48

The distance-time graph for the motion of an object moving with a constant speed is a _____.
(1) Dot
(2) Circle
(3) Straight Line
(4) Curve

Question No : 49

The force exerted by a magnet is an example of _____.
(1) Non-contact force
(2) Muscular force
(3) Contact force
(4) Electrostatic force

Question No : 50

If the force applied on the object is in the direction opposite to the direction of motion, the speed of the object _____
(1) Increases
(2) Stops
(3) Decreases
(4) No effect