Universal time is based on � – McqOptions

MCQOPTIONS

1.	Universal time is based on [SCRA 1989]
A.	Rotation of the earth on its axis
B.	Earth's orbital motion around the earth
C.	Vibrations of cesium atom
D.	Oscillations of quartz crystal
Answer» D. Oscillations of quartz crystal

Discussion

No Comment Found

Related MCQs

Which is different from others by units [Orissa JEE 2002]
Temperature can be expressed as a derived quantity in terms of any of the following [MP PET 1993; UPSEAT 2001]
Dyne/cm2 is not a unit of [RPET 2000]
In which of the following systems of unit, \[Weber\] is the unit of magnetic flux [SCRA 1991; CBSE PMT 1993; DPMT 2005]
Number of base SI units is [MP PET 2003]
If only conservative forces are working in the system and we apply some external force
The force acting on a body moving along x-axis varies with the position of the particle as shown in the figure. The body is in stable equilibrium at:
The units of modulus of rigidity are [MP PMT 1997]
Assertion: Radar is used to detect an aeroplane in the sky Reason: Radar works on the principle of reflection of waves.
The unit of \[e.m.f.\]is [CPMT 1986; AFMC 1986]