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91
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?
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Answer & Solution
Answer: Option C
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92
Which of the following medium has the lowest refractive index?
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Answer & Solution
Answer: Option C
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93
A lens has a power of + 2.0D. The type of lens and its focal length will be . . . . . . . .
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Answer: Option D
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94
Which type of mirror is used by dentists to see large image of patients' teeth?
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Answer & Solution
Answer: Option C
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95
What is viewed through an electron microscope?
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Answer: Option B
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96
A ray of light passing through the optical center of a concave lens, after refraction will come out-
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Answer & Solution
Answer: Option A
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97
A lens, immersed in a liquid becomes invisible when
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Answer: Option D
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98
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.
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Answer & Solution
Answer: Option A
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99
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
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Answer & Solution
Answer: Option B
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100
For shaving, one uses
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Answer: Option A
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