Which of the following groups have quantities that do not have the same dimension?
Force and impulse
Velocity and speed
Work and energy
What is the required characteristic of equilibrium?
Acceleration equals zero
Momentum is zero
Kinetic energy equals zero
Current flows in semi-conductors through what?
Holes and electron
Holes
Electron
The S.I unit of specific resistance is which of the following?
Ohm-meter
Ohm
Ohm/meter
All the colors on the TV screen are produced from a combination of which colors?
Red, green and blue
Red, yellow and orange
Blue, green and yellow
What is the Fraunhofer spectrum?
A line absorption spectrum
A band absorption spectrum
A line emission spectrum
Our solar system belongs to the galaxy called what?
Milky way
Andromeda nebula
Radio galaxy
"Electrons in a circuit move from +ve to -ve", is this statement true?
No, not true as they always move from -ve to +ve
It depends on the source
Yes, true current flow is always +ve to -ve
When two surfaces are coated with a lubricant, what is reduced?
Friction
Viscosity
Surface Tension
Which electromagnetic radiation provides the energy for photosynthesis?
Light
Temperature
Pressure
The magnetic dip is zero at which of the following?
Equator
Pole
Everywhere
What is the Pascal a unit of?
Pressure
Viscosity
Strain
Most dogs are unable to hear a sound of frequency greater than what?
60,000Hz
200Hz
1000Hz
In which of the following processes is thermal conduction at its maximum?
Conduction
Convection
Radiation
Which planet has a density less than water?
Saturn
Jupiter
Mars
There is no net transfer of energy by particles in which of the following?
Stationary wave
Longitudinal wave
Transverse waves
The Doppler's effect is applicable to what?
Both light and sound waves
Light waves
Sound waves
If a liquid does not wet the material of a capillary tube, the liquid in it does what?
Falls
Rises
Neither rises nor falls
What is the specific heat of a gas in an isothermal process?
Infinity
Zero
Remains constant
Thermal radiations are similar to what?
X-rays
Gamma rays
Beta rays
A body moving in a circular path with constant speed has what?
Variable acceleration
Constant retardation
Constant acceleration
A sound wave is which of the following?
Longitudinal and mechanical
Transverse and mechanical
Magnetic and mechanical
To change the quality of sound produced by an instrument, we need to vary what?
The number of overtones
Amplitude
Pitch
Displacement may be which of the following?
Positive, negative, zero
Only positive
Only zero
Which of the following is not a branch of physics?
Statistics
Optics
Electronics
What is the ability of the eye to see objects at all distances called?
Accommodation
Binocular vision
Myopia
What is the inverse square law of intensity valid for?
A point source
A line source
A spherical source
Who proposed the theorem of equipartition of energy?
Maxwell
Einstein
Faraday
At what speed does a signal from a remote control to a toy car travel?
Speed of Light
Speed of Sound
Supersonic Speed
What determines the nature of the path followed by a particle?
Velocity
Speed
Acceleration
Which of the following is not the property of the atomic nucleus?
Sharp boundary
Definite charge
In definite charge
If the distance from a point source of sound is doubled, by what factor does the intensity decrease?
0.25
2
0.5
Among the moons of the planets in our solar system which is the largest?
Ganymede of Jupiter
Titan of Saturn
Callisto of Jupiter
Which of the following is not characteristic of ionic compounds?
Low boiling point
High melting point
Crystalline in solid form
Who provided the first exact solution to the equations of general relativity?
Karl Schwarzschild
John Michell
Copernicus
Which of the following is not the property of Van der Waal compounds?
High melting point
Soluble in water
Low electric conductivity
Which of the following contains all possible frequencies from a high to low frequency range?
Continuous spectrum
Band spectrum
Line spectrum
What is the critical mass of uranium?
Minimum mass needed for chain reaction
1kg equivalent
75 kg
When a body rotates about an axis passing through its centre of mass, the motion is called what?
Spin
Circular motion
Linear motions
Which of the following cannot produce color with white light?
Polarization
Dispersion
Diffraction
In what can the process of convection not take place?
Solids
Liquid
Gases
The particle that is responsible for nuclear fission in a nuclear reactor is called what?
Neutron
Proton
Photon
The energy of running water is an example of what?
Kinetic energy
Potential energy
Electrical energy
What is the capacity to do work by a body called?
Energy
Work
Power
What are electromagnetic waves not affected by?
Electric and magnetic fields
Only electric field
Only magnetic field
Which one of the following pairs contains one vector and one scalar quantity?
Speed and force
Weight and momentum
Power and time
What is one of the major factors that determines the streamlined or turbulent nature of the flow of liquid?
Velocity of flow
Surface tension
Length of the path
A natural magnet is which of the following?
Oxide of iron
Oxide of copper
Oxide of silver
Who proposed the continuous creation theory of the origin of the universe?
Hoyle
Hubble
Russell
What is the center of mass of a cubic block?
Point of intersection of the diagonals
Midpoint of axis
Center
Why do light waves projected onto an oil surface show seven colors?
Because of Interference
Because of Polarization
Because of Refraction
After a shower of rain a rainbow is seen:
Opposite the Sun
Towards the Sun
Anywhere irrespective of the position of the Sun
Which of the following elements occur most abundantly in our universe?
Hydrogen
Nitrogen
Helium
Which planet completes one revolution around the Sun every 88 days?
Mercury
Venus
Mars
Ultraviolet light can be used for what?
To cook food
For mobile phone communications
For fluorescent lights
What flattens large sized liquid drops?
Gravity
Cohesion
Adhesion
In a nuclear reactor what is used to slow down the neutrons?
Moderator
Coolant
Control rods
An ideal voltmeter has what value of resistance?
Infinity
One
Zero
The nature of light radiation is which of the following?
Wave and particle
Wave
Particle
Kinetic energy is always which of the following?
Positive
Negative
Both
A gas is being compressed adiabatically. What is the specific heat of the gas during compression?
Zero
Infinite
Undefined
The Earth behaves like which type of magnet?
Bar magnet
Electric magnet
Horse shoe magnet
Which of the following was invented by James Watt?
Steam engine
Airplane
Transistor
The S.I. unit of velocity is what?
Meter/second
Meter/hour
Meter/minute
What is the combination of two tones that gives a pleasing effect called?
Harmony
Chord
Beat
In which of the following shapes will the metallic mould of a given mass have the minimum surface area?
Sphere
Cylinder
Ellipsoid
The unit of intensity of an electric field is which of the following?
Newton/coulomb
Joule/coulomb
Newton/meter
Who discovered X-rays?
Wilhelm Conrad Rontgen
William Herschel
Johann Wilhelm Ritter
What is heat?
Energy in transit
Kinetic energy of molecules
Potential and kinetic energy of molecules
What determines the shortest wavelength emitted from the X-rays tube?
Voltage applied across the tube
Nature of the gas in the tube
Atomic number of the target
What is the branch of physics in which the celestial bodies are studied?
Astrophysics
Astronautics
Astrology
A thermoelectric refrigerator works on:
The Peltier effect
Joule effect
Thermionic emission
The magnetic field of the Earth is due to what?
Motion and distribution of some material in and outside of the Earth
The Sun
Magnetic dipole
Light waves can be polarized because they are:
Transverse
Reflected
Longitudinal
Which of the following is a self adjusting force?
Static friction
Limiting friction
Dynamic friction
The Earth's gravitational force is called what?
Force of gravity
Gravitational force
None of these
Who discovered the electron, which resulted in the development of electronics?
Sir J. J. Thomson
Michael Faraday
Rutherford
Friction may be classified as what?
Electrical interaction
Gravitational interaction
Magnetic interaction
Which of the following properties help in soldering?
Surface tension
Viscosity
Friction
In covalent bonding, which type of bond leads to variable melting points?
Metallic
Ionic
Covalent
Which comet was seen in 1910 and again in 1986?
Halley's comet
Holmests comets
Great comet
Work is a what?
Scalar quantity
Vector quantity
Neither scalar nor vector
The range of a projectile is at its maximum when the angle of projection is what?
45 degree
60 degree
90 degree
Among the different colors in white light, which color is scattered the most?
Blue
Red
Green
The temperature inside a room is raised with the help of an electric heater. What happens to the relative humidity?
Decreases
Increases
Unchanged
Which signal maintains the best quality?
Digital
Analogue
Infrared
What are radioisotopes?
Isotopes that are radioactive
Some nuclei which emit radio waves
Isotopes used in radio sets
Why do some cars have yellow tinted headlights?
Yellow light produces the least dazzling effect
Yellow light is not scattered
To save power
The color of an extremely hot star should be what?
Blue
Yellow
Red
How can the acceleration of a free-falling object be described?
Constant and downward
Variable and downward
Constant and upward
What is a property of transverse light waves?
Polarization
Rectilinear propagation
Interference
Photoelectric effect occurs only in the light of which of the following?
Threshold wavelength
Any wavelength
Neither of these
The weight of a body is the product of which pair of quantities?
Mass and gravity
Mass and velocity
Mass and speed
The distance covered by a particle does what?
Never decreases with time
Sometimes decreases
Always decreases
What causes the free surface of a liquid to have a minimum area?
Surface tension
Pressure
Viscosity
A source of frequency 500 hertz emits waves of wavelength 0.2 m. The time the wave takes to travel a distance of 100 m is which of the following?
1 second
2 seconds
2.5 seconds
The Galilean moons are the four moons of which planet?
Jupiter
Galileo Galilei
Venus
Kinetic energy is the product of what?
1/2, mass and velocity square
1/2, mass and velocity
1/2, mass and speed
Which of the following instruments is used to measure the temperature of the source from its thermal radiation?
Thermopile
Thermometer
Bolometer
What does an isotope of a chemical element have a differing number of?
Neutrons
Protons
Electrons
