Wave Optics Book Back Practice Test

12th Standard Physics — Wave Optics: Book Back Online Practice Test

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 10 questions available.

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A plane glass is placed over a various coloured letters (violet, green, yellow, red) The letter which appears to be raised more is,

A.red B.yellow C.green D.violet

Two point white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm approximately. The maximum distance at which these dots can be resolved by the eye is, [take wavelength of light, \(\lambda\) = 500 nm]

A.1 m B.5 m C.3 m D.6 m

In a Young’s double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the screen-to-slit distance D must be changed to,

A.2D B.D/2 C.\(\sqrt{2}\)D D.D/\(\sqrt{2}\)

Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are

A.5I and I B.5I and 3I C.9I and I D.9I and 3I

When light is incident on a soap film of thickness 5\(\times\)10\(^{–5}\) cm, the wavelength of light reflected maximum in the visible region is 5320 Å. Refractive index of the film will be,

A.1.22 B.1.33 C.1.51 D.1.83

First diffraction minimum due to a single slit of width 1.0\(\times\)10\(^{–5}\) cm is at 30\(^{o}\). Then wavelength of light used is,

A.400 Å B.500 Å C.600 Å D.700 Å

A ray of light strikes a glass plate at an angle 60\(^{o}\). If the reflected and refracted rays are perpendicular to each other, the refractive index of the glass is,

A.\(\sqrt{3}\) B.\(\frac{\sqrt{3}}{2}\) C.\(\frac{3}{2}\) D.2

One of the of Young’s double slits is covered with a glass plate as shown in figure. The position of central maximum will,

A Young's double-slit experiment diagram where a thin glass slide is placed over the upper slit.

A.get shifted downwards B.get shifted upwards C.will remain the same D.data insufficient to conclude

Light transmitted by Nicol prism is,

A.partially polarised B.unpolarised C.plane polarised D.elliptically polarised

Q10

The transverse nature of light is shown in,

A.interference B.diffraction C.scattering D.polarisation

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About this Wave Optics test

This free online practice test covers Wave Optics from the 12th Standard Physics (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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