Question 1.
1 Micron is equal to
A. 10–9 m
B. 10–12 m
C. 10–6 m
D. 10–15 m
Ans: C. 10–6 m
Question 2.
‘Farad’ is the unit of :
A. Capacitance
B. Inductance
C. Resistance
D. Conductance
Ans: A. Capacitance
Question 3.
Red light has a wavelength of 70 A°. In “nm” it is
A. 7 nm
B. 0.07 nm
C. 70 nm
D. 700 nm
Ans: D. 700 nm
Question 4.
The SI unit of luminous emittance is :
A. Lux
B. Candela
C. Lumen
D. Lumen second
Ans: A. Lux
Question 5.
A micron is equal to
A. 0.1 mm
B. 0.01 mm
C. 0.001 mm
D. 0.0001 mm
Ans: C. 0.001 mm
Question 6.
Which of the following have the same unit ?
A. Work and power
B. Torque and moment of inertia
C. Work and torque
D. Torque and angular momentum
Ans: C. Work and torque
Question 7.
Lux is the SI unit of
A. Luminous flux
B. Luminous efficiency
C. Intensity of illumination
D. Luminous intensity
Ans: C. Intensity of illumination
Question 8.
The unit of measurement of noise is
A. Decibel
B. Hertz
C. Amplifier
D. Acoustics
Ans: A. Decibel
Question 9.
Depth of ocean is measured by
A. Animometer
B. Aerometer
C. Siesmometer
D. Fathometer
Ans: D. Fathometer
Question 10.
Kilohertz is a unit which measures
A. Electromagnetic radio wave frequencies
B. Electric resistance
C. Power used by a current of one ampere
D. Voltage
Ans: A. Electromagnetic radio wave frequencies
Question 11.
Which of the following are used for accurately measuring very small time intervals ?
A. Pulsars
B. Quartz clocks
C. Atomic clocks
D. White dwarfs
Ans: D. White dwarfs
Question 12.
Which of the following pair is Incorrect?
I. Parsec – Distance
II. Barrel – Liquid
III. Light year – Time
A. Only III
B. Only I and III
C. Only II
D. All are correct
Ans: A. Only III
Question 13.
‘Parsec’ is the unit measurement of
A. Density of stars
B. Astronomical distance
C. Brightness of heavenly bodies
D. Orbital velocity of giant stars
Ans: B. Astronomical distance
Question 14.
What is the unit of the physical quantity “Inductance”?
A. Weber
B. Farad
C. Henry
D. Tesla
Ans: C. Henry
Question 15.
Which of the following is the unit of Astronomical Distance ?
A. Metre/sec
B. Sec
C. Para/sec
D. Parsec
Ans: A. Metre/sec
Question 16.
Radian is used to measure
A. Temperature
B. Intensity of Flame
C. Angle
D. Solid Angle
Ans: C. Angle
Question 17.
Analog synthesis refers to a technology based on
A. Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.
B. Interfacing synthesizer equipment.
C. Representing data in terms of measurable physical quantities.
D. Representing physical quantities as numbers.
Ans: C. Representing data in terms of measurable physical quantities.
Question 18.
Pycnometer is an instrument used to measure the
A. Density
B. Intensity of solar radiation
C. Intensity of earthquake
D. High temperatures
Ans: A. Density
Question 19.
What is unit of Astronomical distance ?
A. Light year
B. Angstrom
C. Weber
D. Lux
Ans: A. Light year
Question 20.
What is the unit of the physical quantity Entropy?
A. Watt per kelvin
B. Newton per kelvin
C. Pascal per kelvin
D. Joule per kelvin
Ans: D. Joule per kelvin
Physics GK MCQs all set
- Physics MCQs Set-1
- Physics MCQs Set-2
- Physics MCQs Set-3
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- Physics MCQs Set-5
- Physics MCQs Set-6
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- Physics MCQs Set-15
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- Physics MCQs Set-64
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- Physics MCQs Set-74
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- Physics MCQs Set-76
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