If a medium has a critical angle for total internal reflection from the medium to vacuum as 90°, what is the velocity of light in the medium? (Take c = 3.0 × 108 m/s)
If c is critical angle then Sin c = [(velocity of light in medium) / (velocity of light in vacuum)] sin 90° = [(v) / (3 × 108)] v = 3 × 108 × 1 v = 3 × 108 m/s
Like many in Russia, she blamed the country's failings on futile attempts to _____________ with the West.
Paper is not only useful for preserving information. ………………………………&he...
We are not only afraid of being in the dark; we are also __________ of being kept in the dark.
Turning around a __________ ship is never easy.
(A) large
(B) small
(C) tiny
(D) huge
The car ____________ with a screech of brakes and a grinding of gears.
1) their
2) other
3) there
4) major
5) minor
Find out which word can be filled up in the blanks in sentence in the same sequence to make the sentence grammatically correct and meaningfully compl...
Directions: In each of the following sentences, a blank is given. Choose the most appropriate option from the provided choices to fill in the blank an...
They have to _____________ with elephants, hippos, bushpigs, porcupines, vervet monkeys, baboons and birds which are after their crops.
...You should arrive early to _____ your surroundings.
