Which of the following is not represented in correct unit
1. StressStrain=N/m2StressStrain=N/m2
2. Surface tension = N/mN/m
3. Energy =kg-m/sec=kg-m/sec
4. Pressure =N/m2=N/m2
One second is equal to :
1. 1650763.73 time periods of KrKr clock
2. 652189.63 time periods of KrKr clock
3. 1650763.73 time periods of CsCs clock
4. 9192631770 time periods of CsCs clock
A micron is related to centimetre as
1. 1 micron=10−8cm1 micron=10−8cm
2. 1 micron=10−6cm1 micron=10−6cm
3. 1 micron=10−5cm1 micron=10−5cm
4. 1 micron=10−4 cm1 micron=10−4 cm
The unit of power is :
1. Joule
2. Joule per second only
3. Joule per second and watt both
4. Only watt
A suitable unit for gravitational constant is:
1. kg- msec−1kg- msec−1
2. N m−1secN m−1sec
3. N m2 kg−2N m2 kg−2
4. kg m sec−1kg m sec−1
The unit of angular acceleration in the SI system is
1. N kg−1N kg−1
2. m s−2m s−2
3. rad s−2rad s−2
4. m kg−1Km kg−1K
The unit of Stefan's constant σσ is : [This question includes concepts from Thermal Properties of Matter chapter]
1. W m−2 K−1W m−2 K−1
2. W m2 K−4W m2 K−4
3. W m−2 K−4W m−2 K−4
4. W m−2 K4W m−2 K4
In S=a+bt+ct2, SS=a+bt+ct2, S is measured in metres and tt in seconds. The unit of cc will be:
| 1. | none | 2. | mm |
| 3. | ms−1ms−1 | 4. | ms−2ms−2 |
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