Physics

# The number of significant figure in the result of (5.0m+6.0m) is

Three

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Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 204

#### Realted Questions

Q1 Subjective Medium
Find the dimensions of the gas constant R. Some of the equations involving these quantities are $Q=mc(T_2-T_1), l_t=l_0[1+\alpha(T_2-T_1)]$ and $PV=nRT$.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
The dimensional formula for latent heat is :
• A. ${ M^1LT }^{ -2 }$
• B. ${ M^1L }^{ 2 }{ T }^{ -2 }$
• C. ${ M }^{ 0 }{ L }^{ 2 }{ T }^{ -2 }$
• D. ${ M^1L^1T }^{ -1 }$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
In an equation $y = A{x^2}{\cos ^2}\left\{ {\left. {\dfrac{{2\pi \beta x}}{\lambda }} \right\}} \right.$ units of y,x, $\lambda$ is metre. The dimensional expression of $\left[ {A\beta {\lambda ^2}} \right]$ is
• A. $\left[ {{M^0}{L^1}{T^0}} \right]$
• B. $\left[ {{M^0}{L^1}{T^{ - 1}}} \right]$
• C. $\left[ {{M^0}{L^2}{T^{ - 1}}} \right]$
• D. $\left[ {{M^0}{L^0}{T^0}} \right]$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
When a current of $(2.5 0\pm 0.5)A$ flows through a wire, it develops a potential difference of $(20\pm 1)V$. The resistance of the wire is :
• A. $(8 \pm 2)\Omega$
• B. $(10 \pm 3)\Omega$
• C. $(18 \pm 4)\Omega$
• D. $(20 \pm 6)\Omega$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 TRUE/FALSE Medium
State whether True or False, and correct the statements if false:
(1) Kilometre is a multiple of metre.
• A. True
• B. False

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020