Explanation

Lamp is not a form of energy; it is a device that uses electrical energy to produce light.

Sound, Light, and Heat are all valid forms of energy.

Explanation

Water is used for various recreational activities like swimming, rafting, and boating.

These activities promote physical health.

These are popular in tourism and leisure industries.

Explanation

The Earth's atmosphere is divided into five main layers: Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

Each layer has unique characteristics such as temperature, density, and composition.

Explanation

Explanation

Photosynthesis, the process of food synthesis in plants, primarily occurs in the leaves.

Leaves contain chlorophyll, which captures light energy to produce food from carbon dioxide and water.

Explanation

Creeping animals (such as snakes, lizards, and turtles) are typically classified under the class Reptiles.

Reptiles are cold-blooded and move by creeping or slithering on land.

Explanation

Light is a form of energy.

Light is actually energy made of small particles called photons.

Explanation

Number of neutrons = Atomic mass - Atomic number

= 27 - 13 = 14

Atomic number (13) gives the number of protons, and subtracting it from the atomic mass gives the neutrons.

Explanation

In a dry cell, the electrolyte is a paste of ammonium chloride mixed with zinc chloride.

This paste allows the flow of electric current by enabling the movement of ions within the cell.

Explanation

The distance between the optical center and the principal focus is called the focal length of the lens.

while

A negative focal length indicates that the system diverges light.