MDCAT Physics Chapter 7 MCQ Test With Answer for (Light )

Many students feel anxious about how to prepare for the exam during the MDCAT preparation effectively. Solving MCQs is considered one of the best ways to analyze your preparation level before the commencement of the test. The students preparing for the MDCAT are informed that they can get the MCQs of chapter 7 of physics from this platform.

MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

Try The MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

At the point of contact of the lens and the glass plate, the Newton's ring is

Question # 2

For a point source of light the wave front produced are

Question # 3

A tourmaline crystal is being used as an analyzer In one complete rotation of the crystal the number of excitation will be

Question # 4

If light of low wavelength is used in Young's double slit experiment then width of the fine will

Question # 5

An object is placed at a distance of 200 cm from a convex lens of focal length 10 cm the linear magnification is

Question # 6

A fiber of 50μm diameter capable of carrying white light at ______ distances is called ______ index fiber

Question # 7

When an image is placed at the focal length of the eye piece, the final image formed at

Question # 8

In compound microscope image formed is

Question # 9

The light signal in graded index fibre is totally confined due to

Question # 10

Power loss taken place when a light signal travels along fibres by

Question # 11

Light signals in an optical fibre eventually become dim and must be regenerated by devices called

Question # 12

The phenomenon is found to be prominent when size of the opening (aperture) is

Question # 13

Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be

Question # 14

If the slits in YDS experiment are made closer, fringe spacing will:

Question # 15

An optical fibre with its protective case may be typically

Question # 16

The diffraction grating is used to measure

Question # 17

A line normal to the wave front is called

Question # 18

The regular array of atoms in a crystal has spacing of the order of

Question # 19

When the object lies between F and 2F the image formed by a convex lens is

Question # 20

A convex ens acts as diverging lens when the object is placed

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In cause of YDS experiment, the distance between adjacent bright fringes is given by
A. Δy =λL/d
B. ΔY = L/λd
C. ΔY =λ/L
D. None of these
2 Two sources of waves are called coherent if
A. Both have the same amplitude of vibrations
B. Both produce waves of the same wavelength
C. Both produce waves of the same wavelength having a constant phase difference
D. Both produce waves having the same velocity
3 For destructive interference the path difference is give by:
A. (m-1/2)λ
B. (m+1/2)λ
C. mλ
D. 1/2 mλ
4 Optical fibres function on the principle of
A. reflection
B. refraction
C. total internal reflection
D. total internal refraction
5 Ray optics is valid,when characteristic dimensions are
A. Of the same order as the wavelength of light
B. Much smaller than the wavelength of length
C. Of the order of one millimeter
D. Much larger than the wavelength or light
6 The central point in the Newton's rings is dark due to
A. Destructive interference
B. Constructive interference
C. Additional of path difference λ/2
D. b and c
7 The distance between the top adjacent slits on diffraction grating is called
A. element
B. grating element
C. aperture
D. slit
8 The magnification is negative for
A. Real image
B. Virtual image
C. Sometimes for real sometimes for real
D. Only for cancave lens
9 A typical diffraction grating has lines per centimeter is about
A. 500 to 6000
B. 400 to 5000
C. 450 to 5500
D. 425 to 5670
10 In case of YDS experiment, the distance of the mth bright fringe on the screen from center is
A. Y = (m + 1)λL/d
B. Y = mλL/d
C. Y = (m + 1/2)λL/d
D. None of these

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