Explanation

Explanation

When capacitors are connected in series, the total capacitance (C_total) is given by:

1/C_total = 1/C1 + 1/C2

Given:

C1 = 300 mF

C2 = 600 mF

1/C_total = 1/300 + 1/600

= (2 + 1) / 600

= 3 / 600

= 1 / 200

C_total = 200 mF

Explanation

Uncontrolled nuclear reactions release ionizing radiation (like gamma rays), which can cause cancer and genetic mutations.

This radiation damages living cells, making such reactions highly dangerous.

Explanation

 None of these options are completely incompressible.

While solids are the least compressible among the three states of matter (solid, liquid, and gas), all of them can be compressed to some degree. 

Explanation

Sound waves are characterized by amplitude (loudness), wavelength (distance between wave peaks), and frequency (pitch).

These parameters help describe how sound behaves and is perceived.

Explanation

The standard meter and kilogram are made from an alloy of platinum and iridium to ensure durability and accuracy.

This alloy is used because it resists corrosion and retains its shape over time, crucial for precise measurement.

Explanation

A screw gauge (micrometer) measures very small lengths with high precision, up to 0.01 mm.

It is commonly used to measure wire thickness and small objects accurately.

Explanation

The refractive index (n) is defined as:

n = Speed of light in air / Speed of light in medium

Given:

n = 1.5

Speed of light in air = 3 × 10⁸ m/s

Rearrange the formula to solve for Speed of light in glass:

Speed of light in glass = Speed of light in air / n

= (3 × 10⁸ m/s) / 1.5

= 2 × 10⁸ m/s

Explanation

Explanation

The SI unit of acceleration is meters/second^2 (m/s^2 or ms^-2)

Acceleration (a) is defined as the rate of change of velocity.

Velocity is a vector quantity, and therefore acceleration is also a vector quantity.