A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the sides. This is because of
View Answer Report Error Discuss
Instrument for measuring low temperatures is called
The greater the difference in _____________, the faster the air moves.
What is the unit of calorific value?
Warm air is ______.
Through which does light travel best?
In an optical fibre the signal is transmitted
Which of the following is NOT an application of Fiber optics?