ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 1 J = ________? 10<sup>7</sup>erges 10<sup>-7</sup>erges 10<sup>5</sup>erges 10<sup>-5</sup>erges
2 Scalar product is also called: Cross product Dot product Product scalar <div>Product vector</div>
3 If one newton force acts on a body and displaces the body through 1m work done on body is 1 dyne 1 joule 1KJ 1 Watt
4 The dimensions of work [MLT<sup>-1</sup>] [MLT<sup>-2</sup>] [ML<sup>2</sup>T<sup>-2</sup>] [MLT]
5 The change of order of vectors in a dot product of two vectors: Changes its value Doesn't change it's value Changes the direction product quantity None of these
6 Area under the force displacement graph gives Power Work Heat Energy
7 SI Unit of work is Nm<sup>-1</sup> Joule Nms Both a and b
8 Work done by the force of friction is always Positive Zero Negative Maximum
9 Two vectors having different magnitudes: Have their directions opposite May have their resultant zero Cannot have their resultant zero None of these
10 When force and displacement are perpendicular to each other than work is equal to Unity Infinity Zero -Fd
11 Maximum work is done when force and displacement are Parallel Antiparallel Perpendicular Both a and b
12 Unit vector is used to specify: Magnitude of a vector Dimensions of a vector Direction of a vector Position of a vector
13 Work is a Quantity Vector Scalar Non-physical None of these
14 Work is a scalar product of Force, Velocity Velocity, Displacement Force, Displacement Force, Momentum
15 The driection of vector si space is specified by: <br>One angle Two angles Three angles None of above
16 The sum of two or more vectors is equal to a single vector which is called: Component vector Resultant vector Product vector None of these
17 Which of the following are the units of intensity of light Pois Lux Siemen Candela
18 All trigonometric functions (since, cosine tangent etc. ) are positive in: 1st Quadrant 2nd Quadrant 3rd Quadrant 4th Quadrant
19 Number of supplementary units are Three Two Seven Five
20 Total number of base units are Three Five Seven Nine
21 Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is: 20 N -2 N 18 N 36 N
22 The system international (SI) is built from _______ kind of unites Two Three Four Five
23 The principle characteristics of an ideal standard are Inaccessible and Invariable Accessible and Invariable Accessible and Variable None of these
24 The vector is space has: One Component Two Compnents Three Components Non of these
25 Diameter of the atom is of the order of 10<sup>-10</sup>m 10<sup>-12</sup>m 10<sup>-15</sup>m 10<sup>-9</sup>m
26 Diameter of the nucleus s of the order of 10<sup>-10</sup>m 10<sup>-12</sup>m 10<sup>-15</sup>m 10<sup>-18</sup>m
27 Distance to nearest galaxy from earth is 10<sup>10</sup>m 10<sup>15</sup>m 10<sup>40</sup>m 10<sup>30</sup>m
28 Physical quantities are often divided into ______ categories 3 2 9 5
29 Those quantities which can be measured accurately are known as Physical Quantities Scalar Quantities Vector Quantities Non Physical Quantities
30 Which branch of physics deals with the structure and properties of solids Atomic Physics Plasma Physics Molecular Physics Solid state physics
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