What approximate value will come in place of the question

Two capacitors of capacitance 6 µF and 3 µF are connected in series across a battery of constant voltage.

A stone is dropped from a height of 45 m. How long will it take to reach the ground? (Take g = 9.8 m/s² )

Zero group was introduced by

A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments –

Speed of sound in air is unaffected by change in :

Which of the following part of the earth doesn’t allow the S wave to pass through itself?

Noise is measured in –

A plane electromagnetic wave travels in vacuum along the z-direction. If the frequency of the wave is 20 MHz, what is its wavelength?

Which of the following non-metallic element shows allotropy in the liquid state?

Consider the following statements regarding antibiotics

1. They are used to destroy disease-causing bacteria.