Gravitation Test

Gravitation

This is Gravitation Test-04 for CBSE class 09 Science.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Two objects of different masses are dropped freely from a height near the surface of earth they have A Different velocities at any instant B Same velocities at any instant C Different accelerations D Same acceleration
  • A
    (a), (b) and (c) are correct
  • B
    (b) and (c) are correct
  • C
    All of these
  • D
    (b) and (d) are correct
    Correct
2
A stone falling towards earth A Is attracted by earth B Attracts the earth C Both stone and earth attract each other D No one attract each other
  • A
    All of these
  • B
    (a), (b) and (c) are correct
    Correct
  • C
    (b) and (c) are correct
  • D
    (a) and (b) are correct
3
What will be the pressure when a force of 200N it’s exerted on area of \(5{m^2}\)
  • A
    40 Pa
    Correct
  • B
    30 Pa
  • C
    45 Pa
  • D
    35 Pa
4
In which of the following pressure is increased A Strap of bag is made wider B Knife with sharp edge C Shoes with flat sole D Nail with finely pointed tip
  • A
    (a), (b) and (c) are correct
  • B
    All of these
  • C
    (b) and (c) are correct
  • D
    (b) and (d) are correct
    Correct
5
What is buoyant force-
  • A
    Partially downward force
  • B
    None of the above.
  • C
    A down ward force on an object immersed in a liquid
  • D
    An upward force on an object unimmersed in a liquid
    Correct
6
Find the incorrect statement.
  • A
    mass is a vector quantity.
    Correct
  • B
    that planet will have large value of ‘g’ which has large value of mass and small value of radius
  • C
    when a body is thrown up, the acceleration due to gravity is directed upwards
  • D
    air resistance may make the acceleration different
7
Match the following with correct response. (1) F(2) g(3) Relative density (4) Pressure (A) \(\frac{{GM}}{{{R^2}}}\)(B) \(\frac{{{\text{Force}}}}{{{\text{Area}}}}\)(C) \(\frac{{{\text{Density of substance}}}}{{{\text{Density of water}}}}\)(D) \(\frac{{G.M.m}}{{{r^2}}}\)
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-D, 2-A, 3-C, 4-B
    Correct
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-C, 2-B, 3-D, 4-A
8
Match the following with correct response. (1) Fluid (2) Mass (3) Weight (4) Newton’s law of gravitation (A) Gravitation force, earth attracts an object (B) Gases (C) Inversely proportional to square of distance (D) Quantity of matter
  • A
    1-B, 2-D, 3-A, 4-C
    Correct
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-A, 2-C, 3-B, 4-D
9
Match the following with correct response. (1) Acceleration due to gravity depends(2) Gravitational constant (3) Free fall of the object (4) One kg wt.(A) 9.8N (B) \(6.6734 \times {10^{ - 11}}N{m^2}/K{g^2}\)(C) Latitude of the place (D) Influence of earth’s gravitational pull
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-C, 2-B, 3-D, 4-A
    Correct
10
Match the following with correct response. (1) Archimedes principle (2) Weight of object on moon (3) Strap of school bag made wider (4) Buoyant force (A) One sixth of weight of an object on earth (B) Upward force (C) To Reduce pressure on shoulder (D) Used in designing ships & submarines
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-D, 2-A, 3-C, 4-B
    Correct
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-C, 2-B, 3-D, 4-A
11
Match the following with correct response. (1) Universal law of gravitation (2) Gravitation force between the earth and an object (3) Thrust per unit area (4) Mass per unit volume (A) Motion of moon around the earth (B) Pressure (C) Weight (D) density
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-A, 2-C, 3-B, 4-D
    Correct
  • D
    1-B, 2-D, 3-A, 4-C
12
Match the following with correct response. (1) Value of G (2) Object floats over water (3) S.I unit of pressure (4) S.I unit of weight (A) Newton (B) Density is less than water (C) Always constant (D) Pascal
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-C, 2-B, 3-D, 4-A
    Correct
  • D
    1-D, 2-A, 3-C, 4-B
13
Match the following with correct response. (1) Thrust (2) Ge (3) gm (4) Motion of planets in fixed orbit (A) \(1.63{\text{ }}m/{s^2}\)(B) Force perpendicular to the surface (C) Gravitational attraction of sun (D) \(9.8{\text{ }}m/{s^2}\)
  • A
    1-C, 2-B, 3-D, 4-A
  • B
    1-D, 2-A, 3-C, 4-B
  • C
    1-B, 2-D, 3-A, 4-C
    Correct
  • D
    1-A, 2-C, 3-B, 4-D
14
Match the following with correct response. (1) Density (2) Relative density (3) Acceleration due to gravity (4) Gravitational contrast (A) No unit (B) \(N{m^2}/K{g^2}\)(C) \(m/{s^2}\)(D) \(Kg/{m^3}\)
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-D, 2-A, 3-C, 4-B
    Correct
15
Match the following with correct response. (1) Mass is measured by (2) Weight is measured by (3) Purity of milk (4) Density of liquid (A) Beam balance (B) Lactometer (C) Spring balance (D) Hydrometer
  • A
    1-A, 2-C, 3-B, 4-D
    Correct
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-C, 2-B, 3-D, 4-A