Which of the following characteristics of light remains unchanged when light travels from vaccum enters water?
A). Speed
B). Amplitude
C). Frequency
D). Wavelength
Frequency
Frequency of light remains unchanged when light travels from vaccum enters water.
2. A dynamometer wattmeter can be used for
3. Through which light cannot pass?
4. The four stroke petrol engine Is based on
5. Two block of ice when pressed together join to form one block because
7. The theory of relativity is presented by which scientist
8. Which among the following types of coal produces most heat per unit?
9. If there were no gravity, which of the following will not be there for a fluid?