1.5 x 108m-1
2.0 x 108m-1
3.0 x 108m-1
4.5 x 108m-1
9.0 x 108m-1
Correct answer is B
n = \(\frac{\text{speed in air}}{\text{speed in glass}}\)
1.5 = \(\frac{3\times10^4}{\text{speed in glass}}\)
speed in glass = 2 x 108ms-1
Control in nuclear reactors is effected with boron rods because rhe rods have the ability to ...
When two mirrors are placed at an angle of 90º to each other, how many images will be form...
The saturated vapour pressure of a liquid increases as the ...
The heat required to raise a mass of a substance through 1K is known as ...
An equipment whose power is 1500W and resistance is 375 ohms would draw a current of ...
The specific latent heat of fusion of lead is the amount of heat required to ...