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WorksheetsRRB Science Planner Physics - Measurement and Units
Total questions: 100
Worksheet time: 50mins
Lux is the SI unit of
Intensity of illumination
Luminous efficiency
Luminous flux
Luminous intensity
What is the S.I. unit of wave speed?
Meter
Meter/second
Second
Hertz
A 'light year' is a unit that is used to measure:
Time
Distance
Motion
Speed
1 atmosphere = ?
1.01×10⁵ Pa
10.1×10⁵ Pa
1.01×10⁶ Pa
10.1×10⁶ Pa
1 horse power is equal to -
764 watt
768 watt
764 watt
785 watt
What is 746 watt called?
1 horsepower
1 kW
1 Pascal
1 Joule
1 Diopter is equal to –
1 mm⁻¹
1 m⁻¹
1 dm⁻¹
1 cm⁻¹
What does a meter equal?
10⁶ micron
10⁶ micron
10³ micron
10³ micron
Sound pollution is measured in-
Decibel
Joule
Ampere
Ohm
Loudness of sound is measured in-
Resonance
Frequency
Decibel
Hertz
1 kWh = ?
3.6×10⁷ J
3.6×10⁻⁷ J
3.6×10⁶ J
3.6×10⁻⁵ J
1 kilowatt is equal to?
100 watt
1000watt
10watt
100watt
1 KW = ?
1000J s⁻¹
100J s⁻¹
10J s⁻¹
10000J s⁻¹
5.5 kWh = ?
14.4 × 10³J
14.4 × 10⁵J
14.0 × 10⁵J
19.80 × 10⁶J
82. 5.6 kWh = ?
20.16 × 10⁶J
14.4 × 10⁶J
14.4 × 10⁵J
19.8 × 10⁶J
Atomic radius is measured in-
millimeter
Centimeter
Kilogram
Nanometer
1 Newton = ?
1 kg × 1 ms⁻¹
1 kg × 1 m²
1 kg × 1 ms⁻¹
1 kg × 1 ms²
4.6 kWh = ?
14.0 × 10⁵J
16.56 × 10⁶J
14.1 × 10⁶J
14.4 × 10⁶J
2 kWh = ?
7.2 × 10⁵J
7.2 × 10⁶J
7.2 × 10³J
72 × 10³J
4.2 kWh = ?
14.4 × 10⁵J
15.12 × 10⁵J
14.0 × 10⁵J
14.4 × 10⁶J
1 Nano meter = ?
1/10⁶m
1/10⁹m
1/10⁸m
1/10¹⁰m
1 coulomb/1s = ?
1 volt
1 ampere
1 ohm
1 watt
1 Pico meter = ?
10⁻¹¹m
10⁻¹²m
10⁻¹²m
10¹¹m
1 Joule = ?
1N × 1m
1W × 1h
1N × 1cm
1Pa × 1m
The strength of winds is measured with the help of
Timometer
Wind indicator
Barometers
Beaufort scale
Korotkoff sounds are observed during measuring the-
Electrical insulation
Atmospheric pressure
Blood pressure
Speed of wind flow
A particular household has consumed 100 unit of energy during 5 days. How much energy is this converted to Joule.
360×10⁵J
360×10⁶J
3.6×10⁸J
3.6×10⁷J
Which of the following does NOT match?
Compass – used for navigation and indicates north-south directions
Cyclotron – measures small magnitude Cyclones
Actinometer – measures the intensity of radiation
Electroscope – detects the presence of electric charge
Which instrument is used to detect the presence of electric charge on an object?
Multimeter
Electroscope
Ammeter
Ohmmeter
What does a hygrometer measure?
Heat
Humidity
Force
Radiation
A lie detector apparatus is also known as a:
Seismograph
Barograph
Polarimeter
Polygraph
Which of the following is a lie detector machine?
Telescope
Photometer
Polygraph
Tachometer
Which instrument is used to show the direction of flow of current in a circuit?
Galvanometer
Ammeter
Rheostat
Voltmeter
Which of the following devices is used to measure relatively high temperature, such as are encountered in furnaces?
Bolometer
Pyrometer
Ammeter
Fluxmeter
Which device is used in submarines to see things above the level of the sea?
Pyrometer
Episcope
Periscope
Odometer
Which instrument is used to measure atmospheric pressure?
Lactometer
Barometer
Thermometer
Multimeter
Which among the following devices is used to measure the atmospheric pressure?
Tetrameter
Odometer
Thermometer
Barometer
Which device is used to see the Sun?
Stroboscope
Telescope
Helioscope
Sun meter
Potentiometer basically –
Is a measuring instrument
Is a connective device
Is a calibration equipment
Is a notation tool
From which device is the electric current measured?
Voltmeter
Ammeter
Ohmmeter
Wavemeter
Ammeter is –
Is connected in a series to the circuit
Must have the following legitimate resistance
Draws less power
All of the above
What does stalagmometer used to measure?
Dynamic viscosity
Surface tension
Refractive index
Light activity
Odometer is an instrument which is used in motor vehicle for measuring-
Direction
Distance
Smell
Speed
Odometer in vehicle measures –
Fuel
Distance
Smell
Speed
Which instrument is used for measuring distance travelled by vehicle?
Accelerometer
Odometer
Speedometer
Tachometer
Which of the following speed of flow measuring instrument is area meter?
Venturimeter
Rotameter
Pitot tube
None of these
Tachometer is used for-
R.P.M.
Torque
Rotational kinetic energy
Distance
Multimeter consist of-
Current and Ohm meter
Voltmeter & Ohm meter
Voltmeter & Current
Voltmeter, Currentmeter & Ohm meter
What is false about Richter scale?
It was developed by Charles Richter and Gutenberg in 1935.
It is a logarithmic scale
It can be measured using seismometer
A magnitude of 8-9 on the Richter scale means a light earthquake.
Instrument used for measuring density of liquid is-
Hygrometer
Hydrometer
Hypsometer
Fathometer
Which instrument is used for discovering the things in water?
Laser
Radar
Sonar
Scuba
Echolocation in ships is used for measuring-
Depth of light
Density of fish
Depth of water
Density of oceanic vegetation
............. is type of Echolocation-
Vibration
Frequency
Radar
Sonar
Which instrument is used for measuring density of milk?
Hydrometer
Lactometer
Barometer
Thermometer
Voltmeter is used for measuring-
Air resistance
Voltage
Magnetic flux
Electric current
Which instrument is used for measuring voltage?
Ammeter
Potentiometer
Galvanometer
Voltmeter
Galvanometer is used for measuring-
Direction of speed
Direction of magnetic flux
Direction of sound
Direction of current
Which of the following is used to detect current in a circuit?
Barometer
Anemometer
Lactometer
Galvanometer
Which is used for measuring speed of motor-
Speedometer
Voltmeter
Velometer
Lactometer
Ammeter measures electric current, what does an Ohmmeter measure?
Voltage
Pressure
Resistance
Speed
Which instrument is used for measuring power and speed of wind?
Lactometer
Speedometer
Thermometer
Anemometer
Which of the following can be measured temperature without touching to object?
Infrared thermometer
Filled system thermometer
Mercury glass thermometer
Electric thermometer
Which of the following is a scalar quantity?
Pressure
Displacement
Force
Momentum
Which of the following is not a vector quantity?
Speed / Impulse
Force of gravity
Electric current
Displacement
A vector quantity has both magnitude and direction, whereas a scalar quantity has only magnitude and no direction. Which of the following is a vector quantity?
Work
Speed
Displacement
Energy
What is an example of vector quantity?
Weight
Temperature
Velocity
Length
Which of the following is a vector quantity?
Time
Temperature
Distance
Velocity
Which of the following has both direction and magnitude?
Mass
Distance
Momentum
Speed
In the given physical quantities which is not a relative quantity?
Time
Acceleration
Velocity
Distance
Which of the following is vector quantity?
Volume
Mass
Force
Length
Which of the given below is NOT a vector quantity?
Power
Torque
Displacement
Acceleration
Which of the following is a scalar quantity?
Momentum
Force
Mass
Velocity
Which of the following only gives magnitude and not direction?
Momentum
Displacement
Work
Force
In work – (a) There is no direction, only have magnitude (b) There are no direction & magnitude (c) Both magnitude and direction is present (d) Only direction, no magnitude Work is a scalar quantity because it is the dot product of two vectors (Force and Displacement). Work (W) = F.d Scalar quantity Vector Vector Thus, dot product of two vectors becomes scalar quantity. So, work done has only magnitude but not direction.
There is no direction, only have magnitude
There are no direction & magnitude
Both magnitude and direction is present
Only direction, no magnitude
Which of the following has magnitude and no direction?
Work
Impulse
Displacement
Force
Which of the following can do more work?
A raised hammer
A bullet fired by the gun
A moving stone
A rotating wheel
A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is:
60°
30°
90°
0°
A porter raises a 12 kg object from the surface of the earth and puts the object 1.5 meters above the surface on his head. Calculate the work done on the object (g = 10 m/s²).
140 J
150 J
180 J
150 J
If an aeroplane travelled 4000m distance and work done is 20000J. Then force applied on it is
5 N
50 N
0.20 N
10 N
The gravitational potential energy of an object at a point above the ground. Is defined as the work done in........
Lifting it from the ground to the point above gravity
Applying gravitational force on it
Keep it at the center
Placing it on the ground opposite to gravity
The work done, to increase speed 5 m/s to 10 m/s by a car of 800kg is........
30kJ
40kJ
20kJ
10kJ
An object of 1kg is dropped to the ground from a height of 30m. What is the work done by the force of gravity? (g = 10 m/s²)
10J
300J
0.33J
30J
A person picks up 20kg of goods at 2m above the ground and keeps it on his head, work done by the person is?
200J
400J
40J
20J
An object of 1 kg, raised 10m above the surface of earth then work done by gravitational force will- (g = 9.8 m/s²)
98J
-9.8J
9.8J
-98J
A man raised 20kg object from the surface of earth and put the object 2m above on his head. Calculate the work done by the man is- (g = 10 m/s²)
350J
200J
400J
150J
When an object move 1m distance by 1N force on the direction of force then work done will-
10J
100J
0.01J
1J
Work done by man standing on a platform holding 10kg suitcase is-
100J
0J
98J
980J
A 4.0 kg object is moving horizontally with a speed of 5.0 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:
150J
100J
75J
50J
A ball weighing 0.1 kilogram is dropped from a stationary position when it falls from a distance of 2 meters, then what will be the work done by the force of gravity.
1.96 J
-1.96 J
-0.98 J
0.98 J
When the force exerted on an object, then the work done will be zero if it has displacement.
Negative
Positive
Neutral
Zero
A boy raises a box with a weight of 120 N through a height of 2 m. The work done by the boy is-
60 J
180 J
240 J
120 J
Capacity of doing work is known as-
Power
Pressure
Energy
Force
If the value of work is positive then the kinetic energy of the body -
Decrease his energy
Its value will be zero
It will stay
Increase his energy
Which of the following position is no work done?
Kapil stands with a weight of 10 kg on his shoulder
Sachin walks 4 km
A porter carries weight from a bus to a car.
Arun plays cricket on the field.
The work done by the force is positive when-
Displacement occurs in the direction of force
Displacement is perpendicular to the force
There is no displacement due to the force
Displacement occurs in opposite direction of force
Which of the following activities can be said to have work done?
Harsh is reading the book
Pinky is walking on a flat road with a book on her head
Shruti is sitting on the chair
Khusi is pushing the wall of the house, but fails to do it.
A porter lifts 500 N up to a distance of 100 meters work done by the porter is-
50N
0.20N
0N
5N
In which of the following work is not done?
A wind mill raising the water from well
A donkey put a weight on his back
Suman is swimming in a pool
A engine is pulling a train
Efficiency of work is known as-
Energy
Velocity
Force
Speed
If the work done is zero, then the angle between force and displacement is-
0°
90°
45°
30°
