Explanation

A biconvex lens is the type of lens found in the human eye,

and it is responsible for forming genuine images

The lens, or crystalline lens, is a transparent biconvex

structure in most land vertebrate eyes (We are all vertebrates)

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The image formed at the retina of the human eye is real and inverted.

ND-8-08-2023

Explanation

The number of bones in a human skull is 22

The human skull is generally considered to consist of twenty-two bones

• eight cranial bones
• fourteen facial skeleton bones

**

while

300 bones are there in a newborn infant.

The human hand has 27 bones

Explanation

Venus

Eight planets in the solar system

Explanation

Lipid-rich components of bacterial cells present in the bacterial membrane.

Bacterial membranes present a large diversity of amphiphilic lipids.

Explanation

Most abundant element in Earth crust is Oxygen.

Oxygen in the crust is (46.1%).

The chemical formula of oxygen (dioxygen) is O2.

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List of 10 Most Abundant Elements in the Earth's Crust

Explanation

All electromagnetic waves travel at the same speed through empty space

Electromagnetic waves are formed between electrical and magnetic fields due to vibrations.

Electromagnetic waves travel with the speed of light in free space.

The speed of light is  3*10^8 m/s

Hence, Electromagnetic waves travel at the speed of 3*10^8 m/s.

Explanation

Last updated question 25 feb 2026

Explanation

The intensity of earthquake is measured by Richter Scale.

Richter Scale was invented in 1935.

Explanation

When someone receives an “eye transplant,” they are given a donor cornea, the clear front part of the eye.

The corneal transplant requires a functioning retina and optic nerve to restore vision.

ND12_8_2023

Explanation

Origin of species using Natural Selection was the work of Charles Darwin.

It was published on 24 November 1859,

..

Charles Darwin's discoveries included.

four different species of giant ground sloth (some of the largest land mammals ever to have lived), a gomphothere,

and the remains of an extinct horse.

ND16-8-2023