If the refractive index of a medium in air is 2.0, what i...
If the refractive index of a medium in air is 2.0, what is the critical angle for this medium?
30o
42o
45o
50o
Correct answer is A
sin c = 1n = 12
c = sin-1(1n)
= 30o
Which of the following statements about solid friction are correct? It i. is a force ii. occurs ...
I.Chemical II.Sound III.Electricity Which of the above forms of energy can directly be converted ...
A car starts from rest and covers a distance of 40 m in 10 s. Calculate the magnitude of i...
What is the effective capacitance in the circuit? ...
A lead bullet of mass 0.05 kg is fired with a speed of 200 m/s into a lead block of mass 0.95 k...