Physics

# Pressure is_______quantity.

Scalar

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Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
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#### Realted Questions

Q1 Single Correct Medium
If the units of mass, length and time are doubled, then what happen to the unit of 'relative density'?
• A. doubled
• B. remains same
• C. tripled
• D. equatrepled

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
Kinetic energy of a particle (KE) moving along x-axis depends on its position (x) and time (t) as
$KE = \dfrac{At^2}{B + x^{3/2}} + \dfrac{Cx^{3/2}}{D + t^2}$
the dimensional formula of $\dfrac{ABC}{D}$
• A. $M^2L^{5/2}T^{-6}$
• B. $M^2L^{3/2}T^{-6}$
• C. $M^1L^{5/2}T^{-5}$
• D. $M^2L^{7/2}T^{-6}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
The velocity of water waves may depend on their wavelength ${\lambda _2}$ the density of water $\rho$ and the acceleration due to gravity g. The method of dimensions gives between these quantities as
• A. ${V^2} = k{\lambda ^{ - 1}}{g^{ - 1}}{\rho^{ - 1}}$
• B. ${V^2} = k\,g\lambda$
• C. ${V^2} = k\,\,g\,\lambda \,\rho$
• D. ${V^2} = k\,\,{\lambda ^3}\,{g^{ - 1}}\,\,{\rho^{ - 1}}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Hard
Which of the following combinations of three dimensionally different physical quantities $P, Q, R$ can never be a meaningful quantity?
• A. $PQ-R$
• B. $\dfrac{PQ}{R}$
• C. $\left ( \dfrac{P-Q}{R} \right )$
• D. $\dfrac{\left ( PR-Q^{2} \right )}{QR}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
Which of the following is not a derived quantity?
• A. The floor area of a room
• B. The height of a room
• C. The volume of air in a room
• D. The weight of air in a room

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020