In the fig above, what is the angle of reflection of the ...
In the fig above, what is the angle of reflection of the ray of light at mirror M?
90∘
60∘
45∘
30∘
Correct answer is B
No explanation has been provided for this answer.
When 100g of liquids L1 at 78°C was mixed with Xg of liquid L2 at 50°C, the final temperatur...
The pressure of a gas when cooled at constant volume will decrease because the molecules ...
Which of the following is not a mechanical wave?...
A body is launched from the earth’s surface, of radius R, so that it just escapes from the gra...