#### 11th Standard Physics English Medium Free Online Test Creative 1 Mark Questions - Part Five

11th Standard

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Physics

Time : 00:10:00 Hrs
Total Marks : 10

Answer all the questions

10 x 1 = 10
1. If force |F|, velocity I'VI and time |T| are taken as to fundamental units then the dimensions of mass are

(a)

FV-1T

(b)

FV-1T

(c)

FVT-1

(d)

FVT-2

2. The vectors $\vec A$ and $\vec B$ to be mutually orthogonal when

(a)

$\vec A+\vec B=0$

(b)

$\vec A-\vec B=0$

(c)

$\vec A.\vec B=0$

(d)

$\vec A\times \vec B=0$

3. If a reaction is R and coefficient of friction is μ, what is work done against friction in moving a body by distance d?

(a)

2 μRd

(b)

$\frac { \mu Rd }{ 4 }$

(c)

μRd

(d)

$\frac { \mu Rd }{ 2 }$

4. Two stones of masses m and 2m are whirled in horizontal circles, the heavier one in a radius $\frac { r }{ 3 }$ and the lighter one in radius r. The tangential speed of lighter stone is n times that of the value of heavier. stone when they experience same centripetal forces. The value of n is

(a)

4

(b)

1

(c)

2

(d)

3

5. For a particle revolving in a circular path, the acceleration of the particle is

(a)

along the tangent

(b)

along the radius

(c)

along the circumference of the circle

(d)

zero

6. Moment of inertia of an object does not depend upon:

(a)

mass of object

(b)

mass distribution

(c)

angular velocity

(d)

axis of rotation

7. Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side I cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram-cm2 units will be

(a)

$\frac { 3 }{ 4 }$ml2

(b)

2 ml2

(c)

$\frac { 5 }{ 4 }$ml2

(d)

$\frac { 3 }{ 2 }$ml2

8. A baker contacting a liquid is kept inside a big closed jar if the air inside the far is continuously pumped out, the pressure in the liquid near the bottom will

(a)

increase

(b)

decrease

(c)

remain constant

(d)

first decrease and then increase

9. the given (V- T) diagram, what is the relation between pressures P1 and P2?

(a)

P1=P2

(b)

P1>P2

(c)

P1<P2

(d)

cannot be predicted

10. A spring is cut into 4-equal parts & 2 parts are connected in parallel. What is the effective in parallel. What is the effective spring contest?

(a)

4 k

(b)

16 k

(c)

8 k

(d)

6 k