Physics

# An ice cube has a stone of 500 g placed on its top, is floating in water with its lateral sides placed vertically. It displaces 5 kg of water. Suddenly, the stone slips into water. Because of this ice cube rises by $\displaystyle \frac{1}{10}th$ of its length above the water level. What is the density of the ice cube?

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Single Correct Medium Published on 18th 08, 2020
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#### Realted Questions

Q1 Single Correct Medium
The physical quantity having dimensions $2$ in length is:
• A. Power
• B. Acceleration
• C. Force constant
• D. Stress

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Single Correct Medium
The pair of physical quantities not having the same dimensional formula are:
• A. Acceleration, Gravitational field strength
• B. Torque, Angular momentum
• C. Pressure, Modulus of Elasticity
• D. All the above

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Names of units of some physical quantities are given in List - I and their dimensional formulae are given in List - II. Match the correct pair of the lists.
 List - I List - II a) Pa-s e) $\left[ { L }^{ 2 }{ T }^{ -2 }{ K }^{ -1 } \right]$ b) ${ NmK }^{ -1 }$ f) ${ MLT }^{ -3 }{ K }^{ -1 }$ c) ${ J kg }^{ -1 }{ k }^{ -1 }$ g) ${ ML }^{ -1 }{ T }^{ -1 }$ d) ${ Wm }^{ -1 }{ k }^{ -1 }$ h) $\left[ { ML }^{ 2 }{ T }^{ -2 }{ K }^{ -1 } \right]$
• A. a-h, b-g, c-e, d-f
• B. a-g, b-f, c-e, d-h
• C. a-g, b-e, c-h, d-f
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Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
A thermometer reads 0$^{o}$C as 10 $^{o}$C and 100$^{o}$C as 90$^{o}$C then
Find the correct temperature if the thermometer reads 20$^{o}$C
• A. $20^{o}$C
• B. $12.5^{o}$C
• C. $25^{o}$C
• D. $30^{o}$C

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Subjective Medium
The distance of a galaxy is $56 \times10^{25}m$. Assume the speed of light to be $3\times10^8 m s^{-1}$. Express order of magnitude of time taken by light travelled to the galaxy.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020