Physics Online GK Quiz -3 Question for All Govt Exam

Physics Online GK Quiz – 3 Question for All Govt Exam

There are total 10 to 15 Questions in each GK Quiz Section. Click on “Show Answer

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Q.:-.When the pressure increases, the boiling point rises. The device which uses this principle is
[1.] Pressure cooker
[2.] Electric iron
[3.] Electric heater
[4.] Manometer

Show Answer

[1.] Pressure cooker


Q.:-. Which one of the following is the mode of heat transfer in which warm material is transported so as to displace a cooler material
[1.] conduction only
[2.] convection only
[3.] radiation
[4.] both conduction and convection
Show Answer

[2.] convection only


Q.:-.Black holes are stellar objects which
[1.] emit black body radiation
[2.] have weak, gravitational field
[3.] have intense gravitational field
[4.] have intense magnetic field
Show Answer

[3.] have intense gravitational field


Q.:-.Damping is essential in
[1.] ballistic galvanometers
[2.] dead-beat galvanometers
[3.] tangent galvanometers
[4.] both ballistic and dead-beat galvanometers
Show Answer

[4.] both ballistic and dead-beat galvanometers


Q.:-.If the temperature of a semiconductor is raised, its resistivity will
[1.] increase
[2.] decrease
[3.] remain constant
[4.] reduce to zero
Show Answer

[2.] decrease


Q.:-.Time taken by the Sun to complete one orbit around the galactic centre is called
[1.] one parsec
[2.] one astronomical unit
[3.] one light year
[4.] one cosmic year
Show Answer

[4.] one cosmic year


Q.:-.Which is the correct statement ?
[1.] Sound travels faster than light
[2.] Sound travels faster in water than in air
[3.] Sound can travel through vacuum
[4.] Sound produces a magnetic field
Show Answer

[4.] Sound produces a magnetic field


Q.:-. Bats can fly in the dark without hitting anything because
[1.] they are flying mammals
[2.] their night vision is good
[3.] they are guided by ultrasonic waves produced by them
[4.] of no scientific reason
Show Answer

[3.] they are guided by ultrasonic waves produced by them


Q.:-.The radiation with highest energy is
[1.] UV
[2.] IR
[3.] X-ray
[4.] Visible
Show Answer

[3.] X-ray

Exp. X-ray is an electromagnetic wave of high energy and very short wavelength 


Q.:-. Magnetron is used for the production of
[1.] X-rays
[2.] Cathode rays
[3.] Microwaves
[4.] Positive rays
Show Answer

[3.] Microwaves


Q.:-. The energy gap of diamond is
[1.] 1.7 ev
[2.] 2.6 ev
[3.] 10 ev
[4.] 5.47 ev
Show Answer

[4.] 5.47 ev

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