ECAT Physics Online Test With Answers

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ECAT Physics Online Test

Sr. # Questions Answers Choice
1 At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes: Double Remains constant Half None of these
2 Real gases strictly obey gas law at: High pressure and low temperatures Low pressures and high temperatures High pressures and high temperatures None of these
3 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called: Ideal gas Inert gas Real gas None of these
4 When two objects come to common temperature, the body is said to be in: Static equilibrium Dynamic equilibrium Thermal equilibrium None of these
5 Absolute zero is considered as that temperature at which: All liquid become gases All gases become liquid Water freezes None of these
6 Hotness and coldness of an object is represented in terms: Heat Temperature Chemical energy None of these
7 For transmission of both transverse and longitudinal waves, we can use: Solid Gas Plasma None of these
8 transverse wave motion is possible in: Air A mixture of NH<sub>3</sub>and O<sub>2</sub> Strings All of these
9 The wave motion set up in any medium depends upon: Elasticity Inertia Density All of these
10 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are: Stationary waves Transverse waves Both of these None of these
11 Which one of the following wave motions is transverse: Wave motion produced in water when a piece of stone is thrown into it Pulling of weight hanging vertically with a spiral spring Both of these None of these
12 Of the following, the option ______ reminds of longitudinal waves. Sound waves Heat waves Electromagnetic waves Light waves
13 Crests and troughs are formed in: Longitudinal waves Transverse waves Both of these None of these
14 In transverse waves, the individual particles of the medium move: In circles Perpendicular to the direction of level Parallel to the direction of level None of these
15 The portion of the water above its mean level forms a: Crest Trough Both A and B None of these
16 SI unit of wave length is: Kilometer Metre Centimetre Hertz
17 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called: Longitudinal waves Transverse waves Water waves Complex waves
18 In the formula for finding the speed of waves in the spring, unit of m in SIn units is: kg kg-meter kg/meter Meter/kg
19 Which one of the following elasticizes is possessed by fluids: Young's elastic modulus (length) Bulk elastic modulus (volume) Modulus of rigidity (shape) None of these
20 Which of the following medium/media can transmit both transverse and longitudinal waves: Solids Liquids Gases All of them
21 In solids, only following type/s of wave can travel: Transverse Longitudinal Both A and B None of them
22 Fluids can transmit: Transverse wave Compressional wave Both of them None of them
23 Transverse waves can be set up: Solids Liquids Gases All of them
24 In compressional wave,the layer of medium having reduced pressure is called: Compression Elasticity Node Rarefaction
25 A string is stretched between two points and is plucked at right angles to its length, the vibration produced is: Longitudinal wave Transverse wave No vibration at all None of them
26 The square of 0.4 is: Greater than 0.4 Smaller than 0.4 Equal to 0.4 None of them
27 In the same medium, velocity of the wave: Goes on increasing Remains constant Goes on decreasing None of these
28 A traveling wave has a shape of: Square wave Sine wave Parabola hyperbola
29 The distance covered by the wave in one second is: Wave number Wave length Frequency Wave speed
30 The distance covered by the wave during one period is called its: Wave number Frequency Wavelength Time period
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