QBManager

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361347 Match the Column I with Column II
Column I
Column II
A
Terminal velocity
P
Average densiy becomes less than that of liquid
B
Objects of high density can also float
Q
Upthrust is zero
c
A stone present inside water beaker under free fall
R
Varies with velocity
D
Viscous drag
S
Upthrust and viscous force

1 A - S,B - Q,C - R,D - P

2 A - P,

B - Q

,

C - R

,D - S

3 A - S,

B - P

,C - Q,D - R

4 A - R,B - S,C - Q,D - P

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361348 Assertion :
Water flows faster than honey.
Reason :
The coefficient of viscosity of water is less than honey.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361349 A square plate of $0.5 m$ side length parallel to a second plate with a velocity of $0.5 m / s$ , both plates being immersed in water. If the viscous force is $0.081 N$ and the coefficient of viscosity is 0.02 poise, distance between the plates in $c m$ is

1

2 c m

2

1 c m

3

0.3 c m

4

3 c m

Explanation:

$F = η \frac{A d v}{d x} \Rightarrow d x = η \frac{A d v}{F}$
$= \frac{0.002 \times 0.25 \times 0.5}{0.081}$
$∴ d x = 0.00308 m = 0.308 c m$

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361350 The main cause of viscosity is

1 Force of repulsion between molecules

2 Cohesive forces

3 Adhesive forces

4 Both cohesive and adhesive forces.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361347 Match the Column I with Column II
Column I
Column II
A
Terminal velocity
P
Average densiy becomes less than that of liquid
B
Objects of high density can also float
Q
Upthrust is zero
c
A stone present inside water beaker under free fall
R
Varies with velocity
D
Viscous drag
S
Upthrust and viscous force

1 A - S,B - Q,C - R,D - P

2 A - P,

B - Q

,

C - R

,D - S

3 A - S,

B - P

,C - Q,D - R

4 A - R,B - S,C - Q,D - P

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361348 Assertion :
Water flows faster than honey.
Reason :
The coefficient of viscosity of water is less than honey.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361349 A square plate of $0.5 m$ side length parallel to a second plate with a velocity of $0.5 m / s$ , both plates being immersed in water. If the viscous force is $0.081 N$ and the coefficient of viscosity is 0.02 poise, distance between the plates in $c m$ is

1

2 c m

2

1 c m

3

0.3 c m

4

3 c m

Explanation:

$F = η \frac{A d v}{d x} \Rightarrow d x = η \frac{A d v}{F}$
$= \frac{0.002 \times 0.25 \times 0.5}{0.081}$
$∴ d x = 0.00308 m = 0.308 c m$

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361350 The main cause of viscosity is

1 Force of repulsion between molecules

2 Cohesive forces

3 Adhesive forces

4 Both cohesive and adhesive forces.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361347 Match the Column I with Column II
Column I
Column II
A
Terminal velocity
P
Average densiy becomes less than that of liquid
B
Objects of high density can also float
Q
Upthrust is zero
c
A stone present inside water beaker under free fall
R
Varies with velocity
D
Viscous drag
S
Upthrust and viscous force

1 A - S,B - Q,C - R,D - P

2 A - P,

B - Q

,

C - R

,D - S

3 A - S,

B - P

,C - Q,D - R

4 A - R,B - S,C - Q,D - P

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361348 Assertion :
Water flows faster than honey.
Reason :
The coefficient of viscosity of water is less than honey.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361349 A square plate of $0.5 m$ side length parallel to a second plate with a velocity of $0.5 m / s$ , both plates being immersed in water. If the viscous force is $0.081 N$ and the coefficient of viscosity is 0.02 poise, distance between the plates in $c m$ is

1

2 c m

2

1 c m

3

0.3 c m

4

3 c m

Explanation:

$F = η \frac{A d v}{d x} \Rightarrow d x = η \frac{A d v}{F}$
$= \frac{0.002 \times 0.25 \times 0.5}{0.081}$
$∴ d x = 0.00308 m = 0.308 c m$

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361350 The main cause of viscosity is

1 Force of repulsion between molecules

2 Cohesive forces

3 Adhesive forces

4 Both cohesive and adhesive forces.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361347 Match the Column I with Column II
Column I
Column II
A
Terminal velocity
P
Average densiy becomes less than that of liquid
B
Objects of high density can also float
Q
Upthrust is zero
c
A stone present inside water beaker under free fall
R
Varies with velocity
D
Viscous drag
S
Upthrust and viscous force

1 A - S,B - Q,C - R,D - P

2 A - P,

B - Q

,

C - R

,D - S

3 A - S,

B - P

,C - Q,D - R

4 A - R,B - S,C - Q,D - P

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361348 Assertion :
Water flows faster than honey.
Reason :
The coefficient of viscosity of water is less than honey.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361349 A square plate of $0.5 m$ side length parallel to a second plate with a velocity of $0.5 m / s$ , both plates being immersed in water. If the viscous force is $0.081 N$ and the coefficient of viscosity is 0.02 poise, distance between the plates in $c m$ is

1

2 c m

2

1 c m

3

0.3 c m

4

3 c m

Explanation:

$F = η \frac{A d v}{d x} \Rightarrow d x = η \frac{A d v}{F}$
$= \frac{0.002 \times 0.25 \times 0.5}{0.081}$
$∴ d x = 0.00308 m = 0.308 c m$

PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361350 The main cause of viscosity is

1 Force of repulsion between molecules

2 Cohesive forces

3 Adhesive forces

4 Both cohesive and adhesive forces.