When an object travels at a speed higher than that of sound in air, it produces shock waves. These shock waves carry a large amount of energy. The air pressure variations associated with this type of shock waves produce a very sharp and loud sound called sonic bloom or supersonic speed.

The smooth muscle found in our body are the most abundant muscular tissue. Functions are:
1. Movement of food in the alimentary canal.
2. Contraction and relaxation of blood vessels.

1. It is used chiefly to dissolve metals such as gold and platinum.
2. It is used for cleaning and refining gold.

1. The tendency of atoms to have eight electrons in the valence shell is known as the 'Octet rule' or the 'Rule of eight'.
2. For example, Sodium with atomic number 11 will readily loose one electron to attain Neon's stable electronic configuration.

First law: Whenever there is a change in magnetic flux linked with a coil, an electric current is induced. The induced potential difference lasts so long as there is a change in the magnetic flux linked with the coil.
Second law: The magnitude of the induced current is directly proportional to the rate of change of magnetic flux linked with the coil

White coloured clothes are good reflectors of heat. They keep us cool during summer. So people prefer wearing white clothes during summer.

When two elements A and B combine together to form more than one compound, the masses of A which separately combines with the fixed mass of B are in simple ratio. This law was proposed by John Dalton.

Charcoal adsorbs gases on its surface. Charcoal is called the adsorbent and the gas is called the adsorbate.

i) Standard units give the correct and accurate measurement like length, mass, time etc...
ii) It is not varied from person to person, place to place and object to object. So we need standard unit.

When the car turns around circle, it experiences centripetal acceleration
\(a=\frac { { v }^{ 2 } }{ r } \)
The solution is as follows \(=\frac { \left( 10 \right) ^{ 2 } }{ 25 } \)
\(=\frac { 100 }{ 25 } \)
a = 4 m s^‒2
To determine the net force acting upon the car, use the equation F = ma.
F = ma F = 900 × 4 F = 3600 N

1. Name of the product.
2. Manufacture details.
3. Contents or ingredients
4. Maximum retail price.
5. Date of manufacture.
6. Date of expiry.
7. Standardized marks like ISI, AGMARK, FPO.

Time(t) = 2 hours
= 2 x 60 x 60 = 7200 sec
Current flowing (I) = 2.5 A
Amount of charge (Q) = ?
I = Q / t
Q = It
= 2.5A x 7200 sec = 18000 C