# Physics MCQs GK objective Questions GK test Set – 58

## 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

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
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.

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
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

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