WorksheetsPhysics day 3
Total questions: 50
Worksheet time: 25mins
Polarization is a proof that light is a(an) wave.
Longitudinal
Latitudinal
Transverse
Body
Coulomb's Law for the force between electric charges belongs in the same general category as
The Law of conservation of energy
Newton's second Law of motion
Newton's Law of gravitation
The second Law of thermodynamics
The s in the acronym laser stands for
Simple
Spontaneous
Specific
Stimulated
The X in x-ray stands for:
Extra
Excess
Unknown
The energy of a wave is related to the square of which of the following?
Amplitude
frequency
wavelength
period
Which scientist first hypothesized matter waves?
Schrodinger
de Broglie
Heisenberg
Einstein
The step up transformer steps up the
Voltage
Current
Power
Energy
Which standard unit is the same in all measurement systems?
Mass
Weight
Temperature
Time
Which metric prefix means "one- hundredth"?
Kilo
Milli
Centi
Mega
Radiant energy can be converted to electrical energy using
Light bulbs
Engines
Solar cells
Electricity
When a vapor condenses into a liquid
Its temperature rises
Its temperature falls
It absorbs heat
It gives off heat
Which of the following describes the transfer of heat by molecular collisions?
Conduction
Convection
Radiation
All of the preceding
Which phase of matter has no definite shape, and no definite volume?
Solid
Liquid
Gas
Plasma
A wave motion with motion perpendicular to the direction that the wave is moving is classified as a
Longitudinal wave
Transverse wave
Water wave
Compression wave
A spacecraft is approaching the earth relative to the radio signals it sends out, the signals received on the earth have
A Lower frequency
A shorter wavelength
A higher speed
All of the above
Which of the following do(es) not consist of electromagnetic waves?
X-rays
Radar waves
Sound waves
Infrared waves
f > 20,000 Hz is
Ultrasonic
Infrasonic
Supersonic
sonic boom
A moving source of sound or a moving observer experiences the apparent shift in frequency called
Fundamental frequency
Doppler effect
Wave front effect
Shock waves
Of the following, the electromagnetic wave with the shortest wavelength is
Radio wave
Infrared light
Ultraviolet Light
X-rays
Which of the following happens when light undergoes a change of speed between two transparent materials?
Reflection
Refraction
Dispersion
Interference
Which of the following has thicker center than its edges?
Converging lens
Diverging lens
Convex Mirror
Concave Mirror
Which of the following is true of a convex mirror?
It has radius of curvature equal to f
It is a converging mirror
It forms only virtual images
It forms magnified and reduced images
Which of the following happens when waves bend around the edge of an obstacle in their path?
Reflection
Refraction
Diffraction
Scattering
The particle easiest to remove from an atom is a/an
Electron
Proton
Neutron
Nucleus
Current: C/s ; Voltage :
J/C
C*J
IR
C*s
In which type of circuit would you expect the same voltage with an increased current as more and more resistances are added to the circuit?
Series circuit
Parallel circuit
Open circuit
Closed circuit
An instrument that produces a coherent beam of single-frequency, in phase Light is a:
Telescope
Laser
Camera
Solar cell
A solid was changed to gas without passing through the liquid state by a process called:
Sublimation
Fusion
Evaporation
Condensation
Of the following states of matter, which has the weakest intermolecular force of attraction?
Liquid
Gas
Plasma
Solid
Which of the following terms is describe the state of vibration of a string or air column that has the lowest frequency produced?
Fundamental
Harmonic
Oscillation
Resonance
Which electromagnetic is LEAST harmful to humans?
Radio transformer
UV lamp
X-ray machine
Microwave oven
The image for which light rays diverge cannot form an image is
Imaginative
Concave
Real
Virtual
A bar magnet was broken into four parts. The total number of magnetic existing in the four parts is
6
2
8
4
A small electric lamp when placed on a focal point of a converging lens will produce a:
Diffused beam of light
Parallel beam of light
Converging beam of light
Diverging beam of light
On cold mornings, you shiver when you hold a metal doorknobs because
Your hand absorb the coldness of the doorknob
Your hand loses heat to the cooler doorknob
The doorknob is warmer than your hand
Everything around you is equally cold
Which of the following is not true in a step-down transformer?
The voltage in the secondary coil is less than that in the primary coil
The current in the secondary coil is less than that in the primary coil
The current in the secondary coil is greater than that in the primary coil
The number of loops in the secondary coil is less than that in the primary coil
The speed of sound is generally greatest in
Solids
Liquids
Gases
Vacuum
Energy is transferred from the sun to the earth mainly by
Red shifts
Density current
Electromagnetic waves
Molecular collision
The current from the battery in a parallel circuit is
Less than the current in the branches
Greater than the current in the branches
The same as the current in (lie branches
Equal to the sum of the current in the branches
Sounds are produced by
A body at rest in the water and air
Collision of particles in space
A vibrating body surrounded by nothing
The vibration of the particles of the medium
What are the factors that affect the speed of sound?
Kind and temperature of the medium
Kind and wavelength of the medium
Amplitude and source of the medium
Source and temperature of the medium
The property of light wave that accounts for the phenomenon of color is their:
Wavelength
Velocity
Amplitude
Frequency
The natural heat flow is from the body of higher temperature to the body of lower temperature. This is stated in the
First law of thermodynamics
Second law of thermodynamics
Law of conservation of energy
Third law of thermodynamics
What type of current can be measured from a battery?
Direct current
Alternating current
AC, when the battery is connected to an AC circuit
DC for battery in cars and AC for battery in smaller device
Which is true about the speed of sound?
Regardless of temperature, sound travels in air at the same rate
The speed of sound decreases as the temperature of air increases
The greater the density of the material, the faster the sound travels
The lesser the density of the materials, the faster sound travels
When light rays passes a prism, light is separated into its colors. This property of light Is
Diffraction
Dispersion
Reflection
Refraction
What is the relationship between current and resistance?
Directly proportional
Inversely proportional
Equal
Complimentary
What energy transformation takes place while charging a cellphone?
Electrical energy to chemical energy
Electrical energy to thermal energy
Electrical energy to sound energy
Electrical energy to light energy
When white light passes through a grating, what is visible on the screen?
A full spectrum of color
Bright fringes of only one color
Dark fringes of one wavelength
Nothing will appear on the screen
What is the shape of a lens that reflects parallel light rays toward a focal point?
Concave lens
Convex lens
Plane mirror
Plane convex lens
