निम्नलिखित विकल्पों

Where is the gravitational acceleration zero?

Water Turbine was invented by ________ .

What is the SI unit for measuring speed?

Minimum Distance for proper vision is 

The apparatus used in the refrigeration is

Einstein was awarded Nobel Prize for –

Why does a solid chunk of iron float in mercury but sink in water?

Which of the following Instrument is used to measure humidity?

1 unit of Newton is equal to

Sound and light waves both have ___________ .