MDCAT Physics MCQ's Test With Answers

MDCAT Physics MCQ's Test

Sr. # Questions Answers Choice
1 The eye piece of a compound microscope acts as a Diverging lens Converging lens Diverging mirror Converging mirror
2 Conventionally, all the distances p, q, f, are measured from ______ of the lens Focus Optical center Edges Centre of curvature
3 An optical fiber carries data in the form Lights signals Sound signals A wave A particle
4 The ratio of diameters of two convex lenses is ______ the ratio of their focal lengths Greater than Less than Equal to Square of
5 A single converging lens placed close to the eye to see magnified image is called A telescope Compound microscope Simple microscope None of these
6 If the focal of a convex lens is 5 cm then to get real and inverted image of the same size as that of object, the object should be placed at 5 cm 10 cm 15 cm 20 cm
7 How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper The upper half of the image is cut off The brightness of the image is reduce The brightness of the image is increased Lower half of the image is cut off
8 When a light signal travels along the length of the optical fibre, the power lost by it is due to Reflection Refraction Seattering and absorption Diffraction
9 The path difference involved in interference in thin films depends upon Thickness and nature of thin films Angular of incidence of light Nature of media on both sides of thin film All of these
10 When the object lies between F and 2F the image formed by a convex lens is Real Virtual Diminished Erect
11 The speed of light in a medium of refractive index 1.5 is 3 x 10<sup>8</sup>ms<sup>-1</sup> 4.5 x 10<sup>8</sup>ms<sup>-1</sup> 2.0 x 10<sup>8</sup>ms<sup>-1</sup> None of these
12 A convex ens acts as diverging lens when the object is placed Between F and 2F At 2F Within the focal length Beyond 2F
13 Spherical aberration can be reduced by using Convex lens All the portions of the lens Central portion of the lens Upper portion of the lens
14 The total magnification of a combination of two lenses having individual magnification M1 and M2 is M<sub>1</sub>+ M<sub>2</sub> M<sub>1</sub>M<sub>2</sub> M<sub>1</sub>- M<sub>2</sub> M<sub>1</sub>/ M<sub>2</sub>
15 The unit of power of a lens is Meter Watt Horsepower Dioptre
16 An object is placed between the focus and the optical center of the convex lens. The image formed is Real, erect and magnified Virtual, inverted and magnified Virtual, erect and diminished Virtual, erect and magnified
17 The magnification of a compound microscope of object and eye piece of focal lengths f0and fe, respectively is
18 Angular magnification of a simple microscope is given as
19 Power of a lens is equal to Focal length in meters Reciprocal of focal length expressed in meters Double the focal length Half the focal length
20 The magnification of a simple microscope of focal length 5cm is 3 5 6 20
21 A point on the surface of the mirror where principle axis meets is called Focus Centre of curvature Pole Aperture
22 Maximum detail of object can be seen from a microscope wen light used is of Shorter wavelength Longer wavelength White light Any light
23 Least distance of distinct vision Decrease with increasing age Increases with increasing age Does not vary with age May increase or decrease with age
24 The least distance of distinct vision for a normal eye is 15 cm 25 cm <div>35 cm</div> 1 m
25 Diffraction effect is More for a round edge More for a sharp edge Less for a sharp edge None of these
26 The spacing between lines of diffraction grating is Opaque Transparent Semi-transparent None of these
27 Maximum number of orders available with a grating is ______ grating element Independent of Directly proportional to Inversely proportional to Equal to
28 Given that grating element = 0.2 x 10-3cm in case of a diffraction grating. Then number of lines per centimeter will be 500000 5000 50 5
29 Michelson,s interferometer can be used to measure Wavelength of light Intensity of light Amplitude of wave None of these
30 In Newton,s rings apparatus, we also use Spectroscope Telescope Microscope Turn table
31 A ______ lens is used in the apparatus to get Newton,s rings Plano-concave Plano-convex Convexo-concave Double convex
32 In YDS experiment using white light Colored fringes will be obtained No fringes will be observed Alternative bright and dark fringes will be seen None of these
33 In YDS experiment, the condition for constructive interference of two coherent waves is that the path difference should be Integral multiple of<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 224);"><i>λ</i></span>/2 Integral multiple of<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 224);"><i>λ</i></span> Even integral multiple of<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 224);"><i>λ</i></span>/2 Both A and C
34 Conditions for interference are that the two sources should be coherent and At a far off distance Close together Coinciding None of these
35 The bending of light when it passes from one medium to another is known as Refraction Interference Polarization Diffraction
36 In YDS experiment, data given isλ= 500 nm, L = 100 cm,Δy comes out to be 0.5 cm 0.5 mm 0.5 nm 0.5 m
37 Fringe spacing in YDS experiment will be maximum if we use Red light Green light Violet light Blue light
38 If the slits in YDS experiment are made closer, fringe spacing will Increase Decrease Remain same None of these
39 In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width Becomes doubled Becomes 4 times Is halved Remains the same
40 In case of YDS experiment, the distance of the mth bright fringe on the screen from center is Y = (m + 1)<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);"><i>λ</i></span>L/d Y = m<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);"><i>λ</i></span>L/d Y = (m + 1/2)<span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 24px; text-align: center; background-color: rgb(255, 255, 248);"><i>λ</i></span>L/d None of these
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