HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Prove the following Boolean expression using the laws and theorems of Boolean algebra.

`("A" + "B") ("A" + overline"B")` = A

Prove the following Boolean expression using the laws and theorems of Boolean algebra.

`"A" (overline"A" + "B")` = AB

Prove the following Boolean expression using the laws and theorems of Boolean algebra.

(A + B) (A + C) = A + BC

Verify the given Boolean equation A + `overline"A""B"` = A + B using truth table.

Write down the Boolean equation for the output Y of the given circuit and give its truth table.

What is the difference between polarised light and unpolarised light? 

What is Seebeck effect?

What is Thomson effect?

What is Peltier effect?

State the applications of Seebeck effect.

Light transmitted by Nicol prism is ______.

The transverse nature of light is shown in ______.

What is angle of minimum deviation?

What is dispersion?

How are rainbows formed?

What is Rayleigh’s scattering?

Why does sky appear blue?

What is the reason for reddish appearance of sky during sunset and sunrise?

Why do clouds appear white?

What is polarisation?