Who discovered nuclear fission?
Otto Hahn and Fritz Strassman
Niels Bohr
Ernest Rutherford
Who invented the electric bulb?
Thomas Edison
Alessandro Volta
Guglielmo Marconi
For a given liquid, what does the rate of evaporation not depend on?
The quantity of the liquid
The temperature of the liquid
The surface area of the container
What is the Young's modulus of a perfectly rigid body?
Infinity
Zero
One
A rocket works on the principle of conservation of what?
Momentum
Mass
Energy
Name two planets which have no satellites.
Mercury and Venus
Venus and Mars
Mercury and Mars
Which of the following has the greater wave length?
Radio waves
Microwaves
Gamma ray
Energy is what?
A scalar quantity
A vector quantity
Neither scalar nor vector
What does a microphone convert?
Sound energy into electrical energy
Electrical energy into mechanical energy
Mechanical energy into electrical energy
The mode of vibrations produced in a pipe closed at one end are which of the following?
Odd harmonics only
Even harmonics only
Both odd and even harmonic
Which planets do not have satellites revolving around them?
Mercury and Venus
Mars and Venus
Mars and Mercury
If the momentum of a body is doubled, the kinetic energy does what?
Increases four times
Halves
Is unchanged
What determines the penetrating power of X-rays?
Frequency
Velocity
Intensity
What is the unit of pressure?
Pascal
Henry
Coulomb
By whom was the experimental value of G first accurately determined?
Henry Cavendish
Isaac Newton
Albert Einstein
What does the amount of heat that flows through a wall not depend upon?
Average temperature
Thickness
Material
How many known moons has the planet Neptune?
13
4
2
In what way is an ammeter always connected to a circuit?
In series even on a parallel circuit
In series only on a series circuit
Always in parallel
What is the correct arrangement of colors in descending order of their wavelength?
Orange, yellow, green, violet
Yellow, green, orange, violet
Violet, orange, green, yellow
Which of the following is not conserved in a nuclear reaction?
Mass
Charge
Momentum
Which of the following has an equal period for rotation and revolution?
The Moon
Mercury
Venus
A copper disc with a central hole is heated. What happens to the diameter of the hole?
It decreases
It increases
It remains unchanged
The S.I. unit of weight is what?
Kilogram
Newton
Mole
What type of mirror does a motorist use for the rear view?
Convex mirror
Concave mirror
Cylindrical mirror
What do X-rays not show the phenomenon of?
Deflection by electric field
Diffraction
Polarization
When a mass is revolving in a circle on a plane, what is the direction of angular acceleration?
Upward
Along the radius
Tangential
A physical quantity having both magnitude and direction is known as what?
Vector
Scalar
Neither vector nor scalar
In a prism, dispersive power depends on:
Material of prism
Angle of prism
Shape of prism
If an image is formed by a plane mirror, which of the following is not true?
It is real
It is erect
It is at the same distance as the object
Which of the following electromagnetic waves is least energetic?
Infra-red rays
X-rays
Ultra-violet rays
The angle between the geographic meridian and the magnetic meridian of the Earth is called what?
Declination
Dip
Inclination
The velocity of sound in air will be doubled, if its absolute temperature is what?
Quadrupled
Halved
Doubled
What makes liquid drops spherical?
Surface Tension
Adhesion
Gravity
Which pair has the same formula?
Momentum and impulse
Force and pressure
Speed and velocity
What is a process in which the volume remains constant called?
Isochoric
Isobaric
Isothermal
Which of the following colors has the maximum deviation in a prism?
Blue
Yellow
Green
Who described the theory of universal gravitation?
Isaac Newton
Guglielmo Marconi
Albert Einstein
Lines of force, due to Earth's horizontal magnetic field are which of the following?
Curved lines
Elliptical
Concentric circles
Which type of output can only have two discrete values?
Digital
Analogue
Display screen
Two parallel wires carrying current in opposite direction do what?
Repel each other
Attract each other
Do not affect each other
To what is Stokes theorem applied to?
Viscous liquid
Non viscous liquid
Solution
In a parallel circuit, what is the total current going into a junction when compared to the total current leaving that same junction?
It is equal
It is half
It is double
The sound of the minimum frequency emitted by a vibrating string is not termed as which of the following?
First overtone
First harmonic
Fundamental tone
Which of the following cannot be used to measure time in a spaceship orbiting around the Earth?
Pendulum clock
Atomic clock
Spring clock
What does the letter 'S' stand for in the acronym LASER?
Stimulated
Saturated
Steady
Who speculated that our universe is expanding?
Edwin Hubble
Isaac Newton
Galileo Galilei
The theorem of equipartition of energy applies to the system whose constituents are:
In random motion
In constant motion
At rest
What are primary colors?
Colors which cannot be produced by mixing other colors
Colors which can only be produced by mixing other colors
Color found in nature
What is the breaking load per unit area of cross section of a wire called?
Breaking stress
Yield point
Ductility
What is the green house effect caused by?
Infrared rays
UV rays
Gamma rays
What did Kepler discover about the way planets travel in orbits?
The orbits are elliptical
The orbits are hyperbolic
The orbits are parabolic
Ohm's law is valid when the temperature of the conductor is which of the following?
Constant
Very low
Very high
What does the magnitude of saturation for a photoelectric current depend upon?
Intensity of radiation
Work function
Stopping potential
Which law is based upon the basic concept of electric flux?
Gauss's law
Lenz's law
Coulombs law
The tail of a comet always points away from the Sun due to what?
Solar radiation and solar wind
Force of repulsion
Centrifugal force
What is the S.I. unit for an electric current?
Ampere
Volt
Watt
Which of the following is affected when light waves interfere?
Intensity
Amplitude
Phase
How many stars approximately can you see on a clear night with the naked eye?
2000
20000
23000
The dimensional formula for stress is same as that for:
Pressure
Force
Work
What are sound waves of frequency greater than 20 kHz called?
Ultrasonic
Supersonic
Infrasonic
What is applied to produce rotary motion in a body?
Couple
Force
Impulse of a force
The velocity of sound is greatest in which of the following materials?
Metal
Air
Water
Which of the following is not the property of metallic substances?
Non crystalline
Good conductor
Opaque to light
How many dead centers are there in one cycle of a steam engine?
2
3
4
What is Saturn's largest satellite?
Titan
Atlus
Tethis
Which of the following particles cannot be used for the disintegration of a nucleus?
Electron
Neutron
Proton
Which of the following is used in the design of atomizers?
Bernoulli's theorem
Pascal's law of liquid
Archimedes principal
Color vision is the capacity of an organism or machine to distinguish objects based on ____?
Wavelength
Temperature
Wobble factor
Which of the following makes use of the photoelectric effect?
Television camera
Telephone
Radar
What enables us to write on a black board with chalk?
Adhesion
Gravity
Cohesion
Who invented and improved the cyclotron atom-smasher?
E. Lawrence
Lorentz
Maxwell
A gale blows over a house. The force due to the gale on the roof is in which direction?
Upward
Downward
Stable
The electrification in bodies takes place due to which of the following?
Electron
Positron
Proton
What does Newton's second law of motion assume that apples have a mass of?
Doesn't make any assumptions on apples
9.81 m/s the speed of a free falling apple
1 kg
Which one of the following is a scalar quantity?
Speed
Displacement
Velocity
When light travels from one medium to another which characteristic does not change?
Frequency
Velocity
Wavelength
Longitudinal strain is possible in which of the following?
Solids
Liquids
Gases
What are the combination of notes that produce a jarring effect on the ear called?
Discord
Melody
Noise
What is the unit for the quantity of matter?
Mol
Kg
Amu
Who discovered the two kinds of electric charge "positive" and "negative"?
Benjamin Franklin
Wilbur Wright
Murray Gell-Mann
By what can the age of the Earth be estimated?
Uranium dating
Atomic clocks
Carbon dating
A line of constant dip is called which of the following?
Isoclinic line
Clinic line
Equator
The Milky Way is the name of what?
A galaxy
A star asteroid
A planet
If the Earth shrinks to half of its radius without change in mass, what will be the duration of a day?
6 hours
24 hours
48 hours
What is the approximate ratio of the diameter of the Sun to that of the Earth?
110
1100
111
Which of the following helps in our understanding of the stability of a nucleus?
Binding energy per nucleon
Binding energy
Both
What is the largest planet in the solar system?
Jupiter
Saturn
Neptune
In a stationary wave the strain is which of the following?
Maximum at antinodes
Maximum at nodes
Constant throughout
In a sonometer wire the produced waves are which of the following?
Transverse Stationary and polarized
Longitudinal
Transverse Stationary up polarized
Which of the following is not conserved in nuclear decay?
Number of fundamental particles
Mass number
Atomic number
If a guitar and a flute are tuned in unison then the sound produced by each can be distinguished by which of the following?
Only pitch and timbre
Only quality
Only timbre
The shortest wavelength of X-rays emitted from an x-ray tube depends upon what?
Voltage applied to tube
Current in tube
Nature of gas in tube
Which of the following is an advantage of solar panels?
They make hot water using the Sun's energy
They need electricity to get the water really hot
They do not work at night
Who was the honored Person of the Century by Time magazine in 1999?
Albert Einstein
Madam Marie Curie
Isaac Newton
Potential energy is the product of what?
Mass, acceleration due to gravity and height of the body from the Earth's surface
Mass, gravity and force
Mass, acceleration and velocity
On which planet is the gravitational force lowest?
Mercury
Venus
Earth
Who was the first to show that light is an electromagnetic wave?
Maxwell
Marconi
Hertz
Just before setting, the Sun may appear to be elliptical. Why does this happen?
Because of refraction
Because of reflection
Because of dispersion
An ideal choke would be which of the following?
A pure inductor
A pure resistor
A pure capacitor
At maximum displacement in a simple harmonic motion the potential energy is which of the following?
Maximum
Minimum
Equal to kinetic energy
