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?
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?
92. Which of the following medium has the lowest refractive index?
93. A lens has a power of + 2.0D. The type of lens and its focal length will be . . . . . . . .
94. Which type of mirror is used by dentists to see large image of patients' teeth?
95. What is viewed through an electron microscope?
96. A ray of light passing through the optical center of a concave lens, after refraction will come out-
97. A lens, immersed in a liquid becomes invisible when
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.
1. The apparent displacement of a pencil, partly immersed in water.
2. Sun appears before the sunrise.
3. Sky appears blue.
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
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
100. For shaving, one uses
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