Q321
Open question. . . . . . . . is used in yellow lamp street lights?
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Physics GK · all questionsLight
Light
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Q322
Open questionA curved mirror where the reflecting surface is curved inwards is called a
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Q323
Open questionWhich of the following statements about optical microscope is/are correct?
1. Both the eyepiece and objective of a microscope are convex lenses.
2. The magnification of a microscope increases with increases in focal length of the objective.
3. The magnification of a microscope depends upon the length of the microscope tube.
4. The eyepiece of a microscope is a concave lens.
Select the correct answer:
1. Both the eyepiece and objective of a microscope are convex lenses.
2. The magnification of a microscope increases with increases in focal length of the objective.
3. The magnification of a microscope depends upon the length of the microscope tube.
4. The eyepiece of a microscope is a concave lens.
Select the correct answer:
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Q324
Open questionThe Sun appears red during Sunset
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Q325
Open questionWhich one of the following statements is correct about the magnification of an optical microscope?
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Q326
Open questionWhat is formula of mirror?
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Q327
Open questionThe phenomenon of light associated with the appearance of blue colour of the sky is
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Q328
Open questionA plane glass slab is kept over coloured letters, the letter which appears least raised is
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Q329
Open question. . . . . . . . helps the eye to adjust the focal length of the lens.
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Q330
Open questionWhen a beam of white light is allowed to fall on a prism, the maximum deviation of the emerging light occurs for
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Q331
Open questionAn endoscope is a
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Q332
Open questionRetina of the eye is comparable to which of the following parts of a traditional camera?
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Q333
Open questionThe blue colour of sky is due to
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Q334
Open questionPower of Sunglass is
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Q335
Open questionThe radius of curvature of a concave mirror is 30 cm. Following cartesian sign convention, its focal length is expressed as:
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Q336
Open questionLight is made of seven colours. What is the method of separating the colours?
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Q337
Open questionIn mirrors, the back surface is coated with a thin layer of
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Q338
Open questionTravelers in deserts often tend to have an optical illusion of a sheet of water where none actually exists. What is this called?
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Q339
Open questionThe blue colour of the sky is due to the:
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Q340
Open questionHypermetropia can be corrected by using:
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