MDCAT Physics Chapter 7 Light Online Test With Answers

MDCAT Physics Chapter 7 Light Online Test

Sr. # Questions Answers Choice
1 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
2 The magnification of a simple microscope of focal length 5cm is 3 5 6 20
3 A point on the surface of the mirror where principle axis meets is called Focus Centre of curvature Pole Aperture
4 Maximum detail of object can be seen from a microscope wen light used is of Shorter wavelength Longer wavelength White light Any light
5 Least distance of distinct vision Decrease with increasing age Increases with increasing age Does not vary with age May increase or decrease with age
6 The least distance of distinct vision for a normal eye is 15 cm 25 cm <div>35 cm</div> 1 m
7 Diffraction effect is More for a round edge More for a sharp edge Less for a sharp edge None of these
8 The spacing between lines of diffraction grating is Opaque Transparent Semi-transparent None of these
9 Maximum number of orders available with a grating is ______ grating element Independent of Directly proportional to Inversely proportional to Equal to
10 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
11 Michelson,s interferometer can be used to measure Wavelength of light Intensity of light Amplitude of wave None of these
12 In Newton,s rings apparatus, we also use Spectroscope Telescope Microscope Turn table
13 A ______ lens is used in the apparatus to get Newton,s rings Plano-concave Plano-convex Convexo-concave Double convex
14 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
15 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
16 Conditions for interference are that the two sources should be coherent and At a far off distance Close together Coinciding None of these
17 The bending of light when it passes from one medium to another is known as Refraction Interference Polarization Diffraction
18 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
19 Fringe spacing in YDS experiment will be maximum if we use Red light Green light Violet light Blue light
20 If the slits in YDS experiment are made closer, fringe spacing will Increase Decrease Remain same None of these
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