What does the pupil of the eye adjust automatically for?
The amount of light
Color
Object size
A stationary satellite of a planet orbits at which of the following?
A height independent of its own mass
A height depending upon its own mass
A height depending upon its own weight
The process of the splitting up of a heavy nucleus into roughly two equal fragments with the emission of energy is called what?
Fission
Fusion
Transmutation
The shape of Earth is what?
Spheroidal
Spherical
Round
What is the only force acting on a body during free fall?
Gravity
Friction
Magnetic
What does light intensity depend on?
Frequency
Time period
Amplitude
What is the lowest frequency in the range of human hearing?
20Hz
200Hz
20kHz
Which of the following waves is used for cooking?
Microwaves
Infrared
Visible light
Why is a dam holding a water reservoir thicker at the bottom?
The pressure of water increases with depth
The quantity of water increases with depth
The density of water increases with depth
How must a voltmeter be connected to a circuit to work correctly?
In parallel
In series
In any order
What color will red glass appear to be in a dark room if heated?
Green
Purple
Black
What causes chromatic aberration?
Variation of focal length with color
Paraxial rays
Difference in the curvature of the lens surface
Which of the following characteristic must remain constant for undampened oscillations of a particle?
Amplitude
Velocity
Phase
In which process is the rate of transfer of heat at its maximum?
Radiation
Conduction
Convection
What is a fluid's resistance to a flow known as?
Viscosity
Friction
Surface Tension
What is the energy of an object due to its position or configuration called?
Potential energy
Kinetic energy
Magnetic energy
Which object will have the greatest rotational energy?
Ring
Solid sphere
Uniform rod
When did man first walk on the Moon?
1969
1963
1965
The Sun is what?
A medium sized star
A small star
A big star
What is angular momentum?
A vector (axial)
A vector (polar)
A scalar
What is potential energy associated with?
Mass in gravitational field
Energy in gravitational field
Weight in gravitational field
What is the critical velocity for a non viscous liquid?
Zero
One
Infinity
What is the process whereby the molecules of different substances move randomly called?
Diffusion
Osmosis
Capillarity
What is the S.I. unit for a quantity of heat?
Joule
Calorie
Kilocalorie
What is the unit of power?
Watt
Kelvin
Hertz
Which of the following statements about geostationary orbits is correct?
They are high above the equator
An orbit takes 12 hours
Orbits are at 270 degrees to the equator
What causes rain drops to be a spherical shape?
Surface tension
Viscosity
Residual pressure
The dip pole is 90 degrees at which of the following?
Magnetic dip pole
Geographical pole
Equator
Which of the following is an example of ionic crystals?
Barium Sulphate
Silicon
Copper
A star with a mass of less than 1.4 solar masses will probably end its life as a what?
White dwarf
Neutron star
Black hole
The process by which energy is generated in the Sun is the fusion of what?
Hydrogen
Helium
Uranium
Which of the following characteristics of a sound wave are affected by a change in temperature?
Wavelength
Frequency
Intensity
Which planet has prominent rings around it?
Saturn
Uranus
Mars
Which of the following is an example of three dimensional motion?
Motion in space
Motion in a plane
Motion along a line
Who invented dynamite?
Alfred Nobel
Huygens
H. W. Seeley
What is the unit of intensity of a magnetic field?
Tesla
Ohm
Joule
The work done on a body does not depend upon which of the following?
Initial velocity of the body
Force applied
Displacement
The potential difference between two points in a circuit is measured by which instrument?
Voltmeter
Ammeter
Amplifier
What is the internal energy of a perfect gas independent of?
Time
Volume
Temperature
Which of the following is not conserved during collision?
Mass
Momentum
Total energy
What is a covalent bond a form of?
Chemical bonding
Ionic bonding
Covalent bonding
What do we use to study the internal atomic structure of crystals?
X-rays
Infrared rays
Visible light
Ultrasound waves have frequency of which of the following?
More than 20 Hz
Less than 20 Hz
More than 20000 Hz
Capacitance is the ability of a body to hold a what?
An electrical charge
A negative charge
A sound track
Which of the following is a scalar quantity?
Work
Electric field
Displacement
With orbits mainly between Mars and Jupiter, what are the numerous small celestial bodies that revolve around the Sun?
Asteroids
Comet
Exteriors
A physical quantity having magnitude and no direction is known as what?
Scalar
Vector
Neither scalar nor vector
The line of zero dip is called which of the following?
Clinic line
Equator
Pole
Who is credited with the discovery of the proton?
Rutherford
Thomson
Millikan
What captures radiation from the Sun and transforms it into electrical energy?
Solar Cells
Hydro-electric panels
Geothermal panels
Which of these radiations is totally absorbed by the atmosphere?
Gamma rays
Infrared
Microwaves
What is a light year a unit of?
Distance
Time
Intensity of illumination
In which case is the angular momentum of a body conserved?
The torque acting on it is zero
The force acting on it is constant
The force acting on it is zero
Who was the inventor of the microphone?
Alexander Graham Bell
Pieter Zeeman
Burton Richter
What is the unit of energy?
Joule
Newton
Pascal
When sound waves travel from air to water which of the following remains constant?
Frequency
Velocity
Wavelength
If the magnetic lines of force are crowded, the field is which of the following?
Strong
Weak
Very weak
What is the modulus of rigidity of a liquid?
Zero
One
Infinity
Why do rain drops fall with a constant velocity?
Viscosity
Density
Gravity
What is a signal that varies continuously in frequency called?
An analogue signal
An AM signal
A digital signal
On the basis of what theory was the photoelectric effect fully explained?
Quantum theory
Wave theory
Any of these
What happens in a nuclear power station?
Uranium reacts with hot water to make hydrogen fuel
Nuclear fuel heat is used to boil water
Radiation is used to power a generator
A moving electron produces what?
Magnetic field
Electric field
Both Magnetic field and Electric field
Why does the dispersion of light occur?
Because of a change in wavelength
Because of the angle of incidence
Because of the angle of the prism
Which of the following is an example of a two dimensional collision?
Oblique collision
Elastic collision
Perfectly inelastic collision
Electric current is measured by which instrument?
Ammeter
Voltmeter
Amplifier
What is the name of the special device that is made from semiconductor material?
Diode
Light dependent resistor
Thermistor
Which of the following waves cannot be polarized?
Sound waves
Radio waves
Transverse waves
Who is known for the three laws of motion?
Isaac Newton
Albert Einstein
H. W. Seeley
What is the ratio of the lateral strain and longitudinal strain of a wire called?
Modulus of rigidity
Compressibility
Tensile strength
Which of the following types of waves cannot be propagated through fluids?
Transverse waves
Progressive
Stationary
The location of the center of mass does not depend on which of the following?
Forces acting on the system
Shape
Nature of the distribution of the mass
How do intermolecular forces vary?
Inversely as a higher power of distance
Directly as the square of distance
Inversely as the square of distance
Who discovered the principle of inertia?
Galileo
Kepler
Newton
What are optical waves used in?
Optical fibre communication
Night photography
In radar systems
Who proposed the nuclear model of an atom?
E. Rutherford
J.J. Thomson
Niebuhr
The S.I. unit of magnetic flux is what?
Weber
Maxwell
Tesla per square meter
What is a group of bright and faint stars called?
Galaxy
Constellation
Comet
What is the angular acceleration of a particle moving along a circular path with constant speed?
Zero
Uniform
Variable
What color does a blue colored object seen in sodium light appear to be?
Black
White
Violet
Who invented the nuclear reactor?
Enrico Fermi and Leo Szilard
Peter Spencer
Niels Bohr
In which medium does sound travel fastest?
Steel
Water
Vacuum
The properties of gamma rays are which of the following?
Neutral
Negatively charged
Positively charged
Who is often regarded as the father of modern physics?
Albert Einstein
Isaac Newton
Wilbur Wright
What is the unit of radioactivity?
Curie
Volt
Pascal
Why does the Hydrogen atom not emit X-rays?
Its energy levels are too close to each other
It is too small in size
It has a single electron
When a force applied is opposing the direction of motion of a body, the work done is which of the following?
Negative
Positive
Zero
For a moving particle the distance covered can be which of the following?
Never zero
Zero
Always zero
Which of the following is a vector quantity?
Current density
Current
Power
When light transmits from one medium to another, which of the following quantities remains unchanged?
Frequency
Wavelength
Velocity
Bernoulli's theorem is based on the principle of conservation of what quantity?
Energy
Momentum
Mass
To make the frequency double on an oscillator, what do we have to do to the mass?
Reduce the mass by one fourth
Half the mass
Double the mass
When were Euler's laws of motion formulated?
50 years before Isaac Newton
50 years after Isaac Newton
90 years after Isaac Newton
Whose experimental work proved that the velocity of light is a universal and natural constant?
James Clerk Maxwell
Albert Einstein
Hendrik Lorentz
Name the planet which has the largest number of satellites.
Saturn
Jupiter
Mars
The rate of decrease of velocity is called what?
Retardation
Negative acceleration
Negative velocity
The resistivity of a conductor depends upon its what?
Length
Resistance
Area of cross section
The weight of the human body is which of the following?
Maximum at the pole
Maximum at the equator
Same at the every place of Earth's surface
What does altering a variable resistor on a circuit do?
It effects the current flow
It does not effect the resistance
It does not effect the current flow
Which of the following does not affect the reverberation time?
Frequency of the sound
Nature of the wall
Size of the auditorium
