MDCAT Physics MCQ's Test With Answers

MDCAT Physics MCQ's Test

Sr. # Questions Answers Choice
1 Carnot cycle is: Reversible Irreversible Sometimes A, Sometimes B None of these
2 In which process the change in internal energy of the system is zero: Isochoric process Isobaric process Adiabatic process Isothermal process
3 The nature of thermal radiation is smaller to: Ultraviolet rays Light rays Both of them None of these
4 Avogadro number is known as number of molecules in: One kg of a substance Unit volume of a substance One mole of a substance None of these
5 In YDS experiment, at the center of screen is formed a: Dark fringe Bright fringe No fringe at all None of these
6 In YDS experiment, fringe spacing means the distance between two consecutive_____fringes: Bright Dark Any of A or B None of these
7 In an interference pattern of Ypung's double Slit (YDS) experiment: Bright fringes are wider than dark fringes Dark fringes are wider than bright fringes Both dark and bright fringes are of equal width Central fringes are wider than the outer fringes
8 In case of constructive interference of two waves, the amplitude of the resultant wave is_____either of the waves: Greater than Equal to Smaller than None of these
9 The terms phase difference and path difference are: Same Different Equal None of these
10 In case of destructive interference of two waves, the amplitude of the resultant wave will be_______either of the waves: Greater than Smaller than Equal to none of these
11 To observe interference of light the condition which must be met with is that the sources must be: Monochromatic Phase coherent Both of above None of above
12 Two sources are said to be coherent if they have: Same amplitude Same wavelength Definite phase relation with each other None of them
13 The appearance of colours in the shape (or oil) film results from: Dispersion Interference Reflection Refraction
14 The property of light which does not change with the nature of the medium is: Frequency Amplitude Wavelength None of these
15 A line which represents the direction of travel of a wave is known as: Spherical wavefront Locus Ray Either B or C
16 Huygen's principle states that: Light travels in straight line Light has dual nature Either of these None of these
17 The wave nature of light was proposed by: Newton Thomas Young Huygen None of these
18 Laws of reflection and refraction can also be explained by: Particle nature of light Quantum nature of light Wave nature of light Complex nature of light
19 The speed of secondary wavelets as mentioned in Huygen's principle is______the speed of propagation of the wave itself: Equal to Greater than Smaller than None of these
20 When the source of light is at very large distance, the shape of wavefront is: Spherical Cylindrical Plane None of these
21 Speed of light in vacuum depends upon: Frequency Wavelength Amplitude None of above
22 In case of point source of light, shape of wavefront is: Spherical Cylindrical Plane None of these
23 Huygen principle is used to determine: Speed of light Location of wavefront About polarized and unpolarized light None of them
24 Angle between ray of light and the corresponding wavefront is: 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 60<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 12<font face="Arial, sans-serif">0</font><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
25 The locus of all the points in the same phase of vibration is called: Wave packet Wavefront Wave number None of these
26 Monochromatic light means waves of: Same frequency Same colour Same wavelength All of them
27 Frequency of red colour as compared to that of violet colour is: Equal Smaller Greater None of these
28 Wave length of red colour as compared to that of violet colour is: Smaller Longer Equal None of these
29 Which one of the following can act approximately as a source of monochromatic light: Neon lamp Fluorescent tube Sodium lamp None of these
30 Light waves are: Mechanical waves Electromagnetic waves All of above None of above
31 Electromagnetic waves transport: Energy only Momentum Both A and B are correct None is correct
32 Wavelength of light, on the average, is given by: 10<sup>-14</sup>m 10<sup>-10</sup>m 10<sup>-6</sup>m 10<sup>-4</sup>m
33 Light waves are: Transverse waves Longitudinal waves Compressional waves None of them
34 Light has: Wave nature Particle nature Dual nature None of them
35 The expression of energy stored in an inductor of length L and current I can be expressed by a relation 1/2 LI<sup>2</sup> 1/2 I<sup>2</sup>L 1/2 I<sup>2</sup>L<sup>2</sup> 1/2 IL
36 Which of the following is more elastic material? iron Aluminum Wood Rubber
37
The SI unit of stress is same as that of
 Momentum Pressure Force Length
38 The maintaining the elastic limits of any body, the relation stress to strains is called Hooke's law Pascal's law Young's law None of them
39 The ratio of volumetric stress to volumetric strain is called Young's modules Bulk modulus Shear modulus Hooke's law
40 The ratio of tensile stress to tensile strain is Force Young's modulus Bulk modulus Shear modulus
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