139986
The height of a man is measured by a metre scale having graduations in centimeter only and the height turns out to be \(170 \mathrm{~cm}\). The scientific method for reporting the measurement is
1 \(170 \times 10^{0} \mathrm{~cm}\)
2 \(1.700 \mathrm{~cm}\)
3 \(170 \mathrm{~cm}\)
4 \(1.70 \times 10^{2} \mathrm{~cm}\)
Explanation:
D The scientific method for reporting the measurement is \(1.70 \times 10^{2} \mathrm{~cm}\)
AMU-2014
Units and Measurements
139994
The 'rad' is the correct unit used to report the measurement of
1 the ability of a beam of gamma ray photons to produce ions in a target
2 the energy delivered by radiation to a target
3 the biological effect of radiation
4 the rate of decay of a radioactive source
Explanation:
C Radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. One rad is equal approximately to the absorbed dose delivered when soft tissue is exposed to one roentgen of medium-voltage radiation. Thus, this is the biological effect of radiation.
AIEEE 2006
Units and Measurements
139996
In Poiseuille's method of determination of coefficient of viscosity, the physical quantity that requires greater accuracy in measurement is :
1 pressure difference
2 volume of the liquid collected
3 length of capillary tube
4 inner radius of capillary tube
Explanation:
D Viscosity \((\eta)=\frac{\pi \operatorname{Pr}^{4}}{8 \mathrm{VI}}\) Since, inner radius of the capillary tube appears with a \(4^{\text {th }}\) power in the equation. Therefore, inner radius must be measured with high accuracy.
139986
The height of a man is measured by a metre scale having graduations in centimeter only and the height turns out to be \(170 \mathrm{~cm}\). The scientific method for reporting the measurement is
1 \(170 \times 10^{0} \mathrm{~cm}\)
2 \(1.700 \mathrm{~cm}\)
3 \(170 \mathrm{~cm}\)
4 \(1.70 \times 10^{2} \mathrm{~cm}\)
Explanation:
D The scientific method for reporting the measurement is \(1.70 \times 10^{2} \mathrm{~cm}\)
AMU-2014
Units and Measurements
139994
The 'rad' is the correct unit used to report the measurement of
1 the ability of a beam of gamma ray photons to produce ions in a target
2 the energy delivered by radiation to a target
3 the biological effect of radiation
4 the rate of decay of a radioactive source
Explanation:
C Radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. One rad is equal approximately to the absorbed dose delivered when soft tissue is exposed to one roentgen of medium-voltage radiation. Thus, this is the biological effect of radiation.
AIEEE 2006
Units and Measurements
139996
In Poiseuille's method of determination of coefficient of viscosity, the physical quantity that requires greater accuracy in measurement is :
1 pressure difference
2 volume of the liquid collected
3 length of capillary tube
4 inner radius of capillary tube
Explanation:
D Viscosity \((\eta)=\frac{\pi \operatorname{Pr}^{4}}{8 \mathrm{VI}}\) Since, inner radius of the capillary tube appears with a \(4^{\text {th }}\) power in the equation. Therefore, inner radius must be measured with high accuracy.
139986
The height of a man is measured by a metre scale having graduations in centimeter only and the height turns out to be \(170 \mathrm{~cm}\). The scientific method for reporting the measurement is
1 \(170 \times 10^{0} \mathrm{~cm}\)
2 \(1.700 \mathrm{~cm}\)
3 \(170 \mathrm{~cm}\)
4 \(1.70 \times 10^{2} \mathrm{~cm}\)
Explanation:
D The scientific method for reporting the measurement is \(1.70 \times 10^{2} \mathrm{~cm}\)
AMU-2014
Units and Measurements
139994
The 'rad' is the correct unit used to report the measurement of
1 the ability of a beam of gamma ray photons to produce ions in a target
2 the energy delivered by radiation to a target
3 the biological effect of radiation
4 the rate of decay of a radioactive source
Explanation:
C Radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. One rad is equal approximately to the absorbed dose delivered when soft tissue is exposed to one roentgen of medium-voltage radiation. Thus, this is the biological effect of radiation.
AIEEE 2006
Units and Measurements
139996
In Poiseuille's method of determination of coefficient of viscosity, the physical quantity that requires greater accuracy in measurement is :
1 pressure difference
2 volume of the liquid collected
3 length of capillary tube
4 inner radius of capillary tube
Explanation:
D Viscosity \((\eta)=\frac{\pi \operatorname{Pr}^{4}}{8 \mathrm{VI}}\) Since, inner radius of the capillary tube appears with a \(4^{\text {th }}\) power in the equation. Therefore, inner radius must be measured with high accuracy.
