Online MCQs Quiz Unit-9: Physical Optics;
HSSC-1 (Class-11) Physics (New Book/KPK Text Board, Peshawar)
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1. The principle of Young's double slits experiment is based on the division of:
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2. Which one of the following properties proves the transverse wave nature of light
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3. Coloured fringes observed in soap bubbles are the examples of
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4. During a sunny day we see the objects in a class room even when all the electric lights are off, due to
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5. The principle of Michelson interferometer is based on the division of
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6. In the Young's double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width is
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7. Signal from a remote control to the device operated by it travels with the speed of: :
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8. Light of wavelength λ is incident normally on a diffraction grating for which the slit spacing is equal to 3λ . What is the sine of the angle between the second order maximum and the normal? :
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9. Which of the following gives three regions of the electromagnetic, spectrum in order of increasing wavelength, visible radiation
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10. Two monochromatic radiations X and Y are incident normally on a diffraction grating. The second order intensity maximum for X coincides with the third order intensity maximum for Y. What is the ratio ( wavelength of X)/(wavelength of Y)
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