Thursday, 21 Jan, 2021
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आरती संग्रह
PHYSICS QUIZ3
1.
Pa(Pascal) is the unit for
thrust
pressure
frequency
conductivity
2.
Sound waves in air are
transverse
longitudinal
electromagnetic
polarised
3.
Materials for rain-proof coats and tents owe their water-proof properties to
surface tension
viscosity
specific gravity
elasticity
4.
RADAR is used for
locating submerged submarines
receiving a signals in a radio receiver
locating geostationary satellites
detecting and locating the position of objects such as aeroplanes
5.
The velocity of sound in air (under normal conditions) is–
.30 m / sec
320 m / sec
332 m / sec
3,320 m / sec
6.
Power of sunglass is-
0Dioptre
2Dioptre
1Dioptre
4Dioptre
7.
At room temperature, which element conducts electricity better than any other element?
Pb
Au
Ag
Cu