The Newton-Laplace formula is derived from which of the following?
Adiabatic change
Isobaric change
Isothermal change
Which of the following works on the principle of Pascal's law?
Hydraulic lift
Sprayer
Thermometer
How long does the Earth take to complete one orbit of the Sun?
365.25 days
366 days
365.98 days
Escape velocity is also known as what?
Second cosmic velocity
Second planetary velocity
Second gravitational velocity
In a dry cell which type of energy exists?
Chemical
Mechanical
Electrical
What determines the half life of a radioactive sample?
Temperature and pressure
Temperature only
Pressure only
Which of the following states of matter has two specific heats?
Gas
Solid
Liquid
In a cyclic process, what is the change in internal energy of a system?
Zero
Minimum but not zero
Infinite
In what type of collision is kinetic energy not conserved?
Inelastic collision
Elastic collision
Perfectly elastic collision
How many satellites does Saturn have?
23
21
19
Which layer of atmosphere are short waves reflected from?
Ionosphere
Ozonosphere
Stratosphere
The Earth is which of the following?
Semi conductor of electricity
Good conductor of electricity
Bad conductor of electricity
How many stars are there in our Solar System?
1
4
2
Geocentric means which of the following?
Earth at the centre of our solar system
Earth at the centre of universe
Sun at the centre of our solar system
The magnetism of a magnet is due to what?
The spin motion of the electron
Cosmic rays
The Earth
Which of the following achieves conversion of electro magnetic wave energy into electrical energy?
Photocell
Thermo couple
Cathode ray tube
Alternating current is transmitted to a distant place by which of the following?
High voltage
Low voltage
High voltage to low voltage
When X-rays pass through air what do they do?
Ionize the gas atoms
Produce fumes in the air
Accelerate gas atoms
What type of waves are light waves examples of?
Transverse
Longitudinal
Transverse only when reflected
If a body gets displaced when a force acts on it, what is said to have happened?
Work done
Displacement
Force
Who proposed that the orbits of electrons in an atom were elliptical?
Summerfield
Bohr
Thomson
Why do sound waves in air differ from electromagnetic waves?
They cannot be polarized
They cannot be reflected
They cannot be refracted
The rate of change of velocity of the body is called what?
Acceleration
Average velocity
Average speed
Who was the hydrogen bomb developed by?
Dr. Edward Teller
Zacharias Janssen
Elmer Sperry
Increase in frequency of the incident of radiation increases the what?
Kinetic energy of photoelectrons
Work function
Threshold frequency
Which of the following is a particle and anti-particle pair?
Electron and positron
Proton and neutron
Electron and proton
What is a pure fuse made up of?
Tin
Lead
Copper
What type of mirror can be used to obtain the real image of an object?
Concave mirror
Plain mirror
Convex mirror
In the case of a projectile, where is the angular momentum at its minimum?
At the starting point
At the highest point
On return to ground
If the Earth stopped rotating about its own axis, what would happen to the gravitational force on the pole?
It would remain unchanged
It would increase
It would decrease
What is thermal radiation?
Electromagnetic waves
Mechanical transverse waves
Mechanical longitudinal waves
Electrons remain bound to the nucleus due to which of the following forces?
Electrostatic
Gravitational
Nuclear
The process through which free electrons leave the surface of hot metals is known as what?
Thermionic emission
Proton emission
Electron emission
The weight of a body is which of the following?
Maximum at the poles
Maximum at the equator
The same everywhere on the surface of the Earth
A man drops an apple in a lift. He finds that the apple remains stationary and does not fall. The lift is doing what?
Descending with constant acceleration
Ascending with constant speed
It is stationary
What does the angle of minimum deviation of a prism depend upon?
Angle of incidence
Angle of reflection
Angle of prism
Which of the following theories was proposed by Albert Einstein?
Relativity theory
Law of universal gravitation
Ohm Law
How does heat travel through a vacuum?
By radiation
By conduction
By convection
When comparing analogue to digital signals which of the following statements is false?
Both signals vary continuously
They both weaken with distance
Only digital is affected by interference
Why we use circular tires?
Rolling friction is smaller than sliding friction
They require less material
It is easy to inflate the circular tires
Which of the following is conserved in the planetary motion around the Sun?
Angular momentum
Linear momentum
Angular energy
The process of fission occurs mainly in what?
A nuclear reactor
The Sun
A hydrogen bomb
Which theory describes the relationship between the forces acting on a body and its motion?
Newton's laws of motion
Relativity theory
Universal gravitation
What is the unit of astronomical distance?
Light year
Kilometer
Nautical mile
Electric current density is what kind of quantity?
Vector quantity
Scalar quantity
Both scalar and vector quantity
Which of the following is the best container for gas during an isothermal process?
Copper vessel
Glass vessel
Wood vessel
In the p-type semiconductor the current mainly flows due to which of the following?
Holes
Electrons
Both of these
How many parts is an atom made of?
3: Protons, neutrons and electrons
3: Isotopes, protons and electrons
5: Nuclei, isotopes, protons, neutrons and electrons
What are infrared waves also known as?
Heat waves
Light waves
Microwaves
A running boy jumps onto a rotating platform. Which of the following is conserved?
Angular momentum
Linear momentum
Kinetic energy
What is the branch of physics that deals with the generation, reception and propagation of sound called?
Acoustics
Ultrasonic
Reverberation
Which planet is the most similar to Earth in mass, size, and density?
Venus
Mars
Uranus
Which of the following do not belong to the solar system?
Nebulae
Asteroids
Planets
Which of the following groups of electromagnetic waves are in the order of increasing frequency?
Microwaves, ultraviolet, X-rays
Gamma rays, visible light, ultraviolet rays
Gamma rays, ultraviolet rays, radio waves
When the light is incident at a polarizing angle, which of the following is completely polarized?
Reflected light
Refracted light
Both reflected and refracted light
For the same mass, which of the following has maximum thermal capacity?
Water
Copper
Wood
The capacity of a storage cell is expressed in what?
Ampere hour
Ampere
Farad
What is the unit of power?
Watt
Newton
Pascal
A transformer works on the principle of mutual what?
Induction
Conversion
Inversion
Which of the following are deflected by an electric field?
Alpha particles
Gamma rays
X-rays
Why do stars appear to move from east to west?
Earth is rotating from west to east
Whole universe is moving from east to west
Earth is rotating from east to west
Which one of the following is NOT a vector quantity?
Volume
Force
Acceleration
What are the three parts of an electronic system?
Input, process, output
Analogue, process, digital
Analogue, digital, output
What does the threshold wavelength depend upon?
Work function
Velocity of electrons
Frequency of radiation
The S.I. unit of displacement is what?
Meter
Meter/second
Meter/second square
The rate of flow of charge per unit of time is called what?
Electric current
Magnetic current
Resistance
Where does the X-ray region lie between?
Gamma rays and ultraviolet region
Visible and short radio waves
Ultraviolet and visible region
Which of the following is not essential for the formation of a pure spectrum?
Screen
Narrow beam of light
Parallel beam of light
Which of the following helps determine the temperature of stars?
Weins displacement law
Rayleigh jeans law
Maxwell Boltzmann law
Where is the intensity of the gravitational field of the Earth maximum?
Pole
Equator
Centre of the Earth
In which of the velocity ranges is the velocity of a particle directly proportional to the time elapsed?
Relativistic
Newtonian
Ultra relativistic
When the speed of a particle decreases with time, the particle is said to be what?
Retarded
Negative speed
Neither retarded nor negative speed
The hygrometer is an instrument to measure which of the following?
Relative humidity
The purity of milk
Atmospheric pressure
The total displacement of a body over total time elapsed is called what?
Average velocity
Average speed
Average displacement
The phenomenon of spontaneous disintegration of a heavy nucleus is called what?
Radioactivity
Fission
Fusion
What causes a rainbow?
Dispersion
Refraction
Scattering
On the surface of the Moon, why wouldn't you hear any sound?
Because there is no atmosphere on the Moon
Because on the Moon sound travels at a low frequency
Because on the Moon sound travel very slowly
Which is the planet farthest from the Sun?
Neptune
Jupiter
Saturn
What is the note of lowest frequency in a musical scale called?
Tonic
Tone
Note
As a space ship moves from a higher to a lower orbit, what happens to its speed?
Increases
Remains unchanged
Decreases
Who invented radio telegraphy and succeeded in sending wireless messages across the Atlantic Ocean?
G. Marconi
Sir J. J. Thomson
Johannes Kepler
In what year did Einstein propose the special theory of relativity?
1905
1910
1915
Cobalt-60 is commonly used in radiation therapy because it emits what?
Gamma rays
Beta rays
X-rays
What is defined as the charge transported by a steady current of one ampere in one second?
A coulomb
A joule
A watt
A weber per square meter is equal to what?
One Tesla
One Volt
One Henry
On what does the internal energy per mole of gas depend?
Temperature
Viscosity
Thermal conductivity
Of what is the first law of thermodynamics a special case?
The law of conservation of energy
Charles law
The law of conservation of mass
Which factor does not affect the angle of contact for a rain drop?
Surface area
Gravitation
Viscosity
The value of acceleration due to gravity is what?
9.8 meter/second squared
11.2 meter/second squared
6.2 meter/second squared
Mossbauer spectroscopy probes tiny changes in the energy levels in what?
An atomic nucleus
A mass number
An isotope value
What is Lumen a unit of?
Luminous flux
Luminosity
Quantity of light
What is the unit of frequency?
Hz
m/s
s
The energy E of a photon does not depend on its what?
Size
Wavelength
Frequency
When white light passes through a glass prism it is split into several colors. What is this due to?
Refraction
Reflection
Diffraction
If the Earth stopped rotating about its own axis, what would happen to the gravitational force on the equator?
It would increase
It would remain unchanged
It would decrease
Liquid in a tube displays a meniscus due to surface tension. What shape is the meniscus?
Concave
Convex
Plane
The energy of X-rays varies inversely to what?
The wavelength
The velocity
The frequency
Musical beats are the result of which of the following?
Constructive and destructive interference
Diffraction
Destructive interference
Stellar energy sources are examples of what?
Nuclear fusion
Nuclear fission
Electromagnetic induction
In nuclear fission, the nucleus of an atom does what?
Splits into smaller parts
Combines with other nucleus
Melts to produce energy
