Two numbers are in the ratio 3:5 and their HCF is 20.

Which function is performed by rectifiers?

Which statement about the properties of light and sound is incorrect? 

Which physical property causes raindrops to form spherical shapes?

What is the device used to amplify and modulate microwave frequency signals called?

Which element is known for its high electronegativity?

Cell was discovered by

During __________ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.

What is the cause of hypermetropia?

Minimum Distance for proper vision is 

S.I unit of Luminous Intensity is