In sunlight a rose appears red. In green light the same rose appears :
1). red
2). black
3). green
4). yellow
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1. The surface tension of water on adding detergent to it
2. What should a person on a freely rotating turn table do to decrease his (angular) speed ?
4. Rise of oil a wick is due to
5. Which of the following events occurred first ?
6. Mica is used in electrical appliances such as electric iron because mica is
8. The direction of heat flow between two objects depends on