367558
Statement A : The unit used for measuring nuclear cross-section is ‘barn’. Statement B : 1 barn \( = {10^{ - 28}}{m^2}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Barn is used in nuclear PHYSICS 2025 for measuring the cross-sectional area of nuclei. One barn is equal to \({10^{ - 28}}{m^2}\). Therefore, option (3) is correct.
PHXI02:UNITS AND MEASUREMENTS
367559
If the new unit of force is \(1{\rm{ kilo - newton,}}\) length is \(1\;cm\) and time is \(10\,{\rm{seconds,}}\) then the unit of mass in the new system will be \({10^x}kg.\) Find the value of ' \(x\) '.
1 3
2 7
3 9
4 12
Explanation:
Dimension of force \( = \left[ {{M^1}\;{L^1}\;{T^{ - 2}}} \right]\) Now, \({\rm{ }}F = ma\) \( \Rightarrow m = \frac{F}{a}\) \(\therefore \) Mass \( = \frac{{{{10}^3}\;N}}{{{{10}^{ - 2}}\;m{{\left( {{{10}^1}\;s} \right)}^{ - 2}}}}\) \( = \frac{{{{10}^3}\;kg\;m}}{{\;{s^2}}} \times \frac{{{{10}^2}\;{s^2}}}{{{{10}^{ - 2}}\;m}} = {10^7}\;kg\) Comparing \({10^x}\) with \({10^7},\) \(\therefore \quad x = 7\)
PHXI02:UNITS AND MEASUREMENTS
367560
A physical quantity is measured and its value is found to be \(n u\) where \(n=\) numerical value and \(u=\) unit. Then which of the following relations is true?
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
PHXI02:UNITS AND MEASUREMENTS
367558
Statement A : The unit used for measuring nuclear cross-section is ‘barn’. Statement B : 1 barn \( = {10^{ - 28}}{m^2}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Barn is used in nuclear PHYSICS 2025 for measuring the cross-sectional area of nuclei. One barn is equal to \({10^{ - 28}}{m^2}\). Therefore, option (3) is correct.
PHXI02:UNITS AND MEASUREMENTS
367559
If the new unit of force is \(1{\rm{ kilo - newton,}}\) length is \(1\;cm\) and time is \(10\,{\rm{seconds,}}\) then the unit of mass in the new system will be \({10^x}kg.\) Find the value of ' \(x\) '.
1 3
2 7
3 9
4 12
Explanation:
Dimension of force \( = \left[ {{M^1}\;{L^1}\;{T^{ - 2}}} \right]\) Now, \({\rm{ }}F = ma\) \( \Rightarrow m = \frac{F}{a}\) \(\therefore \) Mass \( = \frac{{{{10}^3}\;N}}{{{{10}^{ - 2}}\;m{{\left( {{{10}^1}\;s} \right)}^{ - 2}}}}\) \( = \frac{{{{10}^3}\;kg\;m}}{{\;{s^2}}} \times \frac{{{{10}^2}\;{s^2}}}{{{{10}^{ - 2}}\;m}} = {10^7}\;kg\) Comparing \({10^x}\) with \({10^7},\) \(\therefore \quad x = 7\)
PHXI02:UNITS AND MEASUREMENTS
367560
A physical quantity is measured and its value is found to be \(n u\) where \(n=\) numerical value and \(u=\) unit. Then which of the following relations is true?
367558
Statement A : The unit used for measuring nuclear cross-section is ‘barn’. Statement B : 1 barn \( = {10^{ - 28}}{m^2}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Barn is used in nuclear PHYSICS 2025 for measuring the cross-sectional area of nuclei. One barn is equal to \({10^{ - 28}}{m^2}\). Therefore, option (3) is correct.
PHXI02:UNITS AND MEASUREMENTS
367559
If the new unit of force is \(1{\rm{ kilo - newton,}}\) length is \(1\;cm\) and time is \(10\,{\rm{seconds,}}\) then the unit of mass in the new system will be \({10^x}kg.\) Find the value of ' \(x\) '.
1 3
2 7
3 9
4 12
Explanation:
Dimension of force \( = \left[ {{M^1}\;{L^1}\;{T^{ - 2}}} \right]\) Now, \({\rm{ }}F = ma\) \( \Rightarrow m = \frac{F}{a}\) \(\therefore \) Mass \( = \frac{{{{10}^3}\;N}}{{{{10}^{ - 2}}\;m{{\left( {{{10}^1}\;s} \right)}^{ - 2}}}}\) \( = \frac{{{{10}^3}\;kg\;m}}{{\;{s^2}}} \times \frac{{{{10}^2}\;{s^2}}}{{{{10}^{ - 2}}\;m}} = {10^7}\;kg\) Comparing \({10^x}\) with \({10^7},\) \(\therefore \quad x = 7\)
PHXI02:UNITS AND MEASUREMENTS
367560
A physical quantity is measured and its value is found to be \(n u\) where \(n=\) numerical value and \(u=\) unit. Then which of the following relations is true?
367558
Statement A : The unit used for measuring nuclear cross-section is ‘barn’. Statement B : 1 barn \( = {10^{ - 28}}{m^2}\)
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
Explanation:
Barn is used in nuclear PHYSICS 2025 for measuring the cross-sectional area of nuclei. One barn is equal to \({10^{ - 28}}{m^2}\). Therefore, option (3) is correct.
PHXI02:UNITS AND MEASUREMENTS
367559
If the new unit of force is \(1{\rm{ kilo - newton,}}\) length is \(1\;cm\) and time is \(10\,{\rm{seconds,}}\) then the unit of mass in the new system will be \({10^x}kg.\) Find the value of ' \(x\) '.
1 3
2 7
3 9
4 12
Explanation:
Dimension of force \( = \left[ {{M^1}\;{L^1}\;{T^{ - 2}}} \right]\) Now, \({\rm{ }}F = ma\) \( \Rightarrow m = \frac{F}{a}\) \(\therefore \) Mass \( = \frac{{{{10}^3}\;N}}{{{{10}^{ - 2}}\;m{{\left( {{{10}^1}\;s} \right)}^{ - 2}}}}\) \( = \frac{{{{10}^3}\;kg\;m}}{{\;{s^2}}} \times \frac{{{{10}^2}\;{s^2}}}{{{{10}^{ - 2}}\;m}} = {10^7}\;kg\) Comparing \({10^x}\) with \({10^7},\) \(\therefore \quad x = 7\)
PHXI02:UNITS AND MEASUREMENTS
367560
A physical quantity is measured and its value is found to be \(n u\) where \(n=\) numerical value and \(u=\) unit. Then which of the following relations is true?