The radius of curvature of the plane mirror is
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An object at 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm to get a real image at a distance of 60 cm from the mirror. What is the height of the image formed?
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A convex mirror focal length f (in air), is immersed in a fluid . The focal length of the mirror in liquid will be-
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Rainbow is a natural phenomenon, which shows . . . . . . . .
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The Sky appears blue due to
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When an object is placed outside the center of curvature of a concave mirror, the image will form:
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Given below are two statements, one labelled as Assertion (A) and other labelled as Reason (R).
Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape.
Reason (R): The refractive index of diamond is less than that of glass.
In the context of the above two statements, which one of the following is correct?
Assertion (A): A diamond sparkles more than a glass imitation cut to the same shape.
Reason (R): The refractive index of diamond is less than that of glass.
In the context of the above two statements, which one of the following is correct?
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The time taken to reach the Sunlight up to the surface of Earth is approximately
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What will be the focal length when human eye lens becomes thin?
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In the visible spectrum, the colour having the shortest wavelength is
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Consider the following statements.
1. If magenta and yellow coloured circles intersect, the intersected area will have a red colour.
2. If cyan and magenta coloured circles intersect, the intersected area will have a blue colour.
Which of the statements given above is/are correct?
1. If magenta and yellow coloured circles intersect, the intersected area will have a red colour.
2. If cyan and magenta coloured circles intersect, the intersected area will have a blue colour.
Which of the statements given above is/are correct?
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Which of the following medium has the lowest refractive index?
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A lens has a power of + 2.0D. The type of lens and its focal length will be . . . . . . . .
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Which type of mirror is used by dentists to see large image of patients' teeth?
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What is viewed through an electron microscope?
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A ray of light passing through the optical center of a concave lens, after refraction will come out-
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A lens, immersed in a liquid becomes invisible when
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Which of the following occurs due to refraction?
1. The apparent displacement of a pencil, partly immersed in water.
2. Sun appears before the sunrise.
3. Sky appears blue.
1. The apparent displacement of a pencil, partly immersed in water.
2. Sun appears before the sunrise.
3. Sky appears blue.
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Consider the following statements
1. The sky appears blue because of scattering.
2. The main cause of seven colors of the rainbow is scattering of light.
3. At the time of sunrise, the sun appears red, due to scattering of light.
Choose the correct statement/s from the given options
1. The sky appears blue because of scattering.
2. The main cause of seven colors of the rainbow is scattering of light.
3. At the time of sunrise, the sun appears red, due to scattering of light.
Choose the correct statement/s from the given options
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Q100
Open questionFor shaving, one uses
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