MDCAT Physics Chapter 7 Light Online Test With Answers

MDCAT Physics Chapter 7 Light Online Test

Sr. # Questions Answers Choice
1 Identify the incorrect statement The distance between the objective and eye-piece is 16.02 cm The angular magnification of the planet is 800 The image of the planet is inverted The objective is larger than the eye-piece
2 The angle with the horizontal at which an underwater swimmer will see the setting sun is 91° 32° 49° 69°
3 If a glass slab is placed in the path of a converging beam of light The point of convergence of light Moves away from the glass slab Moves towards the glass slab Remains at the same point Moves straight
4 Which of the following radiation will be focused farthest from a convex lens X - rays γ - rays Microwaves β - rays
5 Which of the following colors will have minimum critical angle when light passes from glass to air Red Blue yellow Orange
6 Light traveling through vacuum enters water which characteristic of light does not charge Velocity Frequency Wavelength Amplitude
7 In compound microscope the focal length of eye piece is Large Small Same as objective None of these
8 If focal length of objective is increased Magnifying power of compound microscope decreased Magnifying power of astronomical telescope increases The diameter of the objective lens None of these
9 An optical instrument used to see very far off objects is called Telescope Camera lens Microscope Spectrometer
10 A simple astronomical telescope consists of Two convex lenses Three convex and one cocave Two concave lens None of these
11 The distance between the objective and eye-piece of a telescope in normal adjustment is <i>f/</i><sub>0</sub>-<i>f<sub>e</sub></i> <i>f</i><sub>0</sub>+<i>f<sub>e</sub></i> <i>2f<sub>e</sub></i>-<i>f<sub>e</sub></i> None of these
12 The magnifying power of an instrument is expressed in Radians Degrees No units None of these
13 The final image obtained by astronomical telescope is Inverted w.r.t object Magnified Virtual All of them
14 The speed of light in vacuum or in air is 3 x 10<sup>10</sup> <i>m ! s</i> 3 x 10<sup>9</sup>&nbsp;<i>m ! s</i> 3 x 10<sup>8</sup>&nbsp;<i>m ! s</i> 3 x 10<sup>7</sup>&nbsp;<i>m ! s</i>
15 The speed at which light travels within the material depends upon Refractive index of medium Wavelength Frequency Intensity
16 Optical fibres are of Five type Two type Three type None of these
17 Multimode graded index fibre core has diameter of 40-200&nbsp;μm 50-1000&nbsp;μm 50-150&nbsp;μm 50-300&nbsp;μm
18 How many phone calls can be carried by single mode step index fibre 25000 96000 14000 21000
19 Single mode step index fibre has a very thin core of about diameter 5.5&nbsp;μm 9.5&nbsp;μm 5.0&nbsp;μm All of these
20 Multimode step index fibre has a core of relatively larger diameter such is 125 μm 175 μm 50 μm 100 μm
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