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Which process in the hydrological cycle is responsible for the movement of water from the surface to the atmosphere?

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Important Questions on Mechanical Properties of Fluids

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4 C level if the initial amount is denoted as 2C?

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

A heat source at

T = 10^{3} K

is connected to another heat reservoir at

T = 10^{2} K

by a copper slab which is

1 m

thick. Given that the thermal conductivity of copper is

0 .1 W K^{- 1} m^{- 1}

, the energy flux through it in the steady-state is:

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Which phase occupies the maximum part of cell cycle?

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Cells in G₀ phase:

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

In the 'S' phase of the cell cycle:

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

The correct sequence of phases of cell cycle is:

HARD

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

One end of a copper rod of uniform cross section and length

1.5 m

is kept in contact with ice and the other end with water at

100 ° C

. At what point along its length should a temperature of

200 ° C

be maintained so that in the steady state, the mass of ice melting be equal to that of the steam produced in same interval of time? Assume that the whole system is insulated from surroundings.

(L_{ice} = 80 cal g^{- 1}

and

L_{steam} = 540 cal g^{- 1})

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

The amount of heat conducted out per second through a window, when inside temperature is

10 ℃

and outside temperature is

- 10 ℃

1000 J

. Same heat will be conducted in through the window, when outside temperature

- 23 ℃

and inside temperature is

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Consider a compound slab consisting of two different materials having equal thicknesses and thermal conductivities K and 2K, respectively. The equivalent thermal conductivity of the slab is

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Two plates of same thickness, of coefficients of thermal conductivity $K_{1}$ and $K_{2}$ and areas of cross section $A_{1}$ and $A_{2}$ are connected as shown in figure. The common coefficient of thermal conductivity $K$ will be

Question Image

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Transfer of heat in solids takes place through the process of _____.

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Two rods of equal lengths and areas of cross-section are kept parallel and hanged between temperatures 20

℃

and 80

℃

. The ratio of the effective thermal conductivity to that of the first rod is (the ratio=

\frac{K_{1}}{K_{2}}

\frac{3}{4}

)

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Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

A brass boiler has a base area 0.15 m² and thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boiler. Thermal conductivity of brass = 109 J/s - m - K.
(Heat of vaporisation of water = 2256 x 10³ J/kg)

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

The end A of rod AB of length 1 m is maintained at 80^oC and the end B at 0^oC. The temperature at a distance of 60 cm from the end A is

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

The temperature of a room heated by a heater is 20^oC when outside temperature is - 20^oC and it is 10^oC when the outside temperature is - 40^oC. The temperature of the heater is

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature

θ

along the length

x

of the bar from its hot end is best described by which of the following figure?

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Two rods of the same length and diameter having thermal conductivities

K_{1}

and

K_{2}

are joined in parallel. The equivalent thermal conductivity of the combination is

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Under steady state, the temperature of a body

MEDIUM

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

A slab of stone area 3600 cm2 and thickness 10 cm is exposed on the lower surface to steam at

100^{o} C

. A block of ice at

0^{o} C

rests on upper surface of the slab. In one hour 4.8 kg of ice is melted. The thermal conductivity of the in

j s^{- 1} m^{- 1} k^{- 1}

is (Latent heat of ice

= 3.36 \times 10^{5} J / K g

)

EASY

Physics>Mechanical Properties of Matter>Mechanical Properties of Fluids>Fluid Mechanics

Two cylindrical conductors

A and B

of same metallic material have their diameters in the ratio

1 : 2

and lengths in the ratio

2 : 1

. If the temperature difference between their ends is same, the ratio of heat conducted respectively by

A and B

per second is

Which process in the hydrological cycle is responsible for the movement of water from the surface to the atmosphere?

Important Questions on Mechanical Properties of Fluids

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