Download App

Science M.C.Q. [1 M]

Gravitation · MP Board (MPBSE) STD 9 (Madhya Pradesh - English Medium). 173 questions.

Questions · Page 4 of 4

M.C.Q. [1 M]

MCQ 1511 Mark
When a body is dipped completly or partially into a liquid, then weight $(w)$ of the liquid displaced by the body and upthrust force on the body into the liquid are related as:
  • ✓
    $w = F$
  • B
    $w < F$
  • C
    $w > F$
  • D
    None of these.
Answer
Correct option: A.
$w = F$
$w = F$
View full question & answer→
MCQ 1521 Mark
Three spheres have radii $1\ cm, 2\ cm$ and $3\ cm$, respectively. Which sphere exerts maximum pressure on earth?
  • ✓
    First
  • B
    Second
  • C
    Third
  • D
    All equal
Answer
Correct option: A.
First
First
View full question & answer→
MCQ 1531 Mark
An object is put one by one in three liqui having different densities. The object floats with $\frac{1}{9}, \frac{2}{11},$ and $\frac{3}{7}$ parts of their volumes outside the liquid surface in liquids of densities $\mathrm{d}_1, \mathrm{d}_2$ and $\mathrm{d}_3$ respectively. Which of the following statement is correct?
  • A
    $d_1 > d_2 > d_3$
  • B
    $d_1 > d_2 < d_3$
  • C
    $d_1 < d_2 > d_3$
  • ✓
    $d_1 < d_2 < d_3$
Answer
Correct option: D.
$d_1 < d_2 < d_3$
$d_1 < d_2 < d_3$
View full question & answer→
MCQ 1541 Mark
The weight of an object at the centre of the earth of radius $R$ is:
  • ✓
    Zero.
  • B
    Infinite.
  • C
    $R$ times the weight at the surface of the earth.
  • D
    $\frac{1}{\text{R}^2}$times the weight at surface of the earth.
Answer
Correct option: A.
Zero.
 zero
View full question & answer→
MCQ 1551 Mark
When an object moves with a constant acceleration, under the influence of force of gravitation of the earth only, the object is said to have:
  • ✓
    Free fall
  • B
    Accelerated fall
  • C
    Projectile motion
  • D
    Constant velocity
Answer
Correct option: A.
Free fall
(a) Free fall
View full question & answer→
MCQ 1561 Mark
The universal law of gravitation gives the gravitational force between
  • A
    The Earth and a point mass only
  • B
    The Earth and the Sun only
  • ✓
    Any two bodies having some mass
  • D
    Two charged bodies only
Answer
Correct option: C.
Any two bodies having some mass
(c) Any two bodies having some mass
View full question & answer→
MCQ 1571 Mark
A girl stands on a box having $60\ cm$ length, $40\ cm$ breadth and $20\ cm$ width in three ways. In which of the following cases, pressure exerted by the brick will be:
  • A
    Maximum when length and breadth form the base.
  • ✓
    Maximum when breadth and width form the base.
  • C
    Maximum when width and length form the base.
  • D
    The same in all the above three cases.
Answer
Correct option: B.
Maximum when breadth and width form the base.
Maximum when breadth and width form the base.
View full question & answer→
MCQ 1581 Mark
The correct equation to show relation between $G$ and $g$ is:
  • A
    $G = Mm/d^2$
  • ✓
    $G = Mm/R^2$
  • C
    $G = G Mm/d^2$
  • D
    $G = Gm/R^2$
Answer
Correct option: B.
$G = Mm/R^2$
$G = Mm/R^2$
View full question & answer→
MCQ 1591 Mark
If suddenly the gravitational force of attraction between earth and satellite revolving around it becomes zero, then the satellite will
  • A
    Continue to move in its orbit with same velocity
  • ✓
    Move tangential to the original orbit with the same velocity
  • C
    Becomes sationary in its orbit
  • D
    Move towards the earth
Answer
Correct option: B.
Move tangential to the original orbit with the same velocity
(b) Move tangential to the original orbit with the same velocity
View full question & answer→
MCQ 1601 Mark
Acceleration due to gravity of a body during free fall does not depend upon the:
  • A
    Mass of earth
  • ✓
    Mass of body
  • C
    Universal gravitational constant
  • D
    Radius of earth
Answer
Correct option: B.
Mass of body
(b) Mass of body
View full question & answer→
MCQ 1611 Mark
The mean radius of the earth's orbit round the sun is $1.5 × 10^{11}$. The mean radius of the orbit of mercury round the sun is $6 \times 10^{10}$ m. The mercury will rotate around the sun in:
  • A
    $A$ year.
  • B
    Nearly $4$ years.
  • ✓
    Nearly $\frac{1}{4}\text{years}$.
  • D
    $2.5$ years.
Answer
Correct option: C.
Nearly $\frac{1}{4}\text{years}$.
Nearly $\frac{1}{4}\text{years}$.
View full question & answer→
MCQ 1621 Mark
The gravitational force between two objects is $F$. If masses of both objects are halved without changing distance between them, then the gravitational force would become:
  • ✓
    $\frac{\text{F}}{4}$
  • B
    $\frac{\text{F}}{2}$
  • C
    $\text{F}$
  • D
    $2\text{F}$
Answer
Correct option: A.
$\frac{\text{F}}{4}$
$\frac{\text{F}}{4}$
View full question & answer→
MCQ 1631 Mark
A rectangular wooden block has length, breadth and height of $50 \ cm, 25\ cm$ and $10\ cm$, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?
  • A
    The maximum pressure is exerted when the length and breadth form the base.
  • B
    The maximum pressure is exerted when length and height form the base.
  • ✓
    The maximum pressure is exerted when breadth and height form the base.
  • D
    The minimum pressure is exerted when length and height form the base.
Answer
Correct option: C.
The maximum pressure is exerted when breadth and height form the base.
The maximum pressure is exerted when breadth and height form the base.
View full question & answer→
MCQ 1641 Mark
The law of gravitation gives the gravitational force between:
  • A
    The earth and a point mass only.
  • B
    The earth and the sun only.
  • ✓
    Any two bodies having some mass.
  • D
    Any two charged bodies only.
Answer
Correct option: C.
Any two bodies having some mass.
(c) Any two bodies having some mass.
View full question & answer→
MCQ 1651 Mark
The total force exerted by the body perpendicular to the surface is called:
  • A
    Pressure
  • ✓
    Thrust
  • C
    Impulse
  • D
    None of these
Answer
Correct option: B.
Thrust
(b) Thrust
View full question & answer→
MCQ 1661 Mark
Apparent loss of weight of a body when immersed in a liquid can be explained on the basis of:
  • A
    Molecular theory
  • B
    Electron theory
  • ✓
    Archimedes' principle.
  • D
    Bernoulli's principle.
Answer
Correct option: C.
Archimedes' principle.
(c) Archimedes' principle.
View full question & answer→
MCQ 1671 Mark
Thrust is which type of force:
  • A
    Parallel
  • ✓
    Perpendicular
  • C
    Both parallel and perpendicular
  • D
    None
Answer
Correct option: B.
Perpendicular
(b) Perpendicular 
View full question & answer→
MCQ 1681 Mark
Buoyant force experienced by a solid is _____ the weight of the fluid displaced by it:
  • A
    More than
  • B
    Less than
  • ✓
    Equal to
  • D
    Cant say
Answer
Correct option: C.
Equal to
(c) Equal to
View full question & answer→
MCQ 1691 Mark
An object is put one by one in three liquids having different densities. The object floats with $\frac{1}{9},\frac{2}{11}\ \text{and}\ \frac{3}{7}$parts of their volumes outside the liquid surface in liquids of densities $\mathrm{d}_1, \mathrm{d}_2$ and $\mathrm{d}_3$respectively. Which of the following statement is correct?
  • A
    $d_1 > d_2 > d_3$
  • B
    $d_1 > d_2 < d_3$
  • C
    $d_1 < d_2 > d_3$
  • ✓
    $d_1 < d_2 < d_3$
Answer
Correct option: D.
$d_1 < d_2 < d_3$
$d_1 < d_2 < d_3$
View full question & answer→
MCQ 1701 Mark
The mass of a body on earth is 60kg. Its mass on moon will be:
  • A
    $360\ kg$
  • ✓
    $60\ kg$
  • C
    $10\ kg$
  • D
    $1/ 6 \ kg$
Answer
Correct option: B.
$60\ kg$
$60\ Kg$
View full question & answer→
MCQ 1711 Mark
A body of mass $6\ kg$ immerses in water partially. If the body displaces $100g$ of water, then the apparent weight of the body is:
  • ✓
    $59\ N$
  • B
    $40\ N$
  • C
    $49\ N$
  • D
    $60\ N$
Answer
Correct option: A.
$59\ N$
$59\ N$
View full question & answer→
MCQ 1721 Mark
The _________ force is responsible for providing the necessary centripetal force to planets moving around the Sun.
  • A
    Electrical
  • ✓
    Gravitational
  • C
    Magnetic
  • D
    None
Answer
Correct option: B.
Gravitational
(b) Gravitational
View full question & answer→
MCQ 1731 Mark
An object is put in three liquids having different densities, one by one. The object floats with $\frac{1}{9},\frac{2}{11}$ and $\frac{3}{7}$ parts of its volume outside the surface of liquids of densities $\mathrm{d}_1, \mathrm{~d}_2$ and $\mathrm{d}_3$ respectively. Which of the following is the correct order of the densities of the three liquids ?
  • A
    $d_1 > d_2 > d_3$
  • B
    $d_2 > d_3 > d_1$
  • ✓
    $d_1 < d_2 < d_3$
  • D
    $d_3 > d_2 > d_1$
Answer
Correct option: C.
$d_1 < d_2 < d_3$
(c) $d_1 < d_2 < d_3$
View full question & answer→
Generate Paper FreeAll Gravitation topics