Study the figure and answer the following questions. Explain the working of the above telescope.

Light rays coming from space are reflected by the concave mirror. Small plain mirror deflects it again before converging the rays at the focus. As a result the light gets focussed at a point that is lying in the perpendicular to the axis of the telescope's cylinder which pass through the eyepiece and a magnified image of the object is obtained. This type of arrangement is seen in a Newtonian telescope.

Answer the following questions and arrange the letters you get inside the coloured boxes in the order given below the questions to spell out the name of a famous bacteriologist. Instrument required to view microbes- Amoeba divides by _____ fission. Chlorella propagates by producing special cells called _____. An organism that lives on or within the bodies of other organisms, affecting them adversely _____. A viral disease- Yeast has a cell wall made of _____. The name is

Instrument required to view microbes is known as a microscope. It is made up of magnifying lens where the tiny microbes which are naked to our eyes are observed in this. Amoeba is a unicellular eukaryotic organism. It is irregular in shape and reproduces through an asexual reproductive method called binary fission. Chlorella is a unicellular green alga which is seen in stagnant water or in soils rich in organic matter. A thin cell wall encloses a single cup-shaped chloroplast and a centrally placed nucleus. These reproduce by forming special cells called spores. An organism that lives on or within the bodies of other organisms, affecting them adversely is parasites. Viruses are one of the types which require a host body to replicate and to survive. Viruses are the intracellular obligate parasites which are active inside the host body. These causes diseases like AIDS, mumps, chickenpox, poliovirus, etc. Chickenpox is also known as varicella, is a highly contagious disease caused by the Varicella zoster virus. Yeast is unicellular eukaryotic fungi. These are reproduced by the budding method. Yeast cells are oval in shape with the prominent vacuole, a nucleus, mitochondria and stored food in the form of glycogen. The body is made up of a hard layer called chitin. The identified scientist name is Robert Koch. He was well known in microbiology. He was the one who discovered the bacteria that causes anthrax ( Bacillus anthracis ), septicaemia, tuberculosis, etc.

A telescope is an optical instrument designed to make distant objects like stars, planets, appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image magnified.

EASY

Earn 100

What is Cassegrain telescope? And what is the unique thing about it?

Important Questions on Observing Space : Telescopes

EASY

Science>Physics>Observing Space : Telescopes>Telescope

Discuss the action of a Bainbridge mass spectrometer to determine the isotopic masses.

EASY

Science>Physics>Observing Space : Telescopes>Telescope

By considering the first correlation complete the second correlation:
Hubble telescope:

569 km

high from earth surface:: Revolving orbit of Hubble telescope: _____. (high earth orbit/ low earth orbit)

EASY

Science>Physics>Observing Space : Telescopes>Telescope

Mention any two achievements of Hubble Telescope.

MEDIUM

Science>Physics>Observing Space : Telescopes>Telescope

Explain emission and absorption spectra ( Diagram not necessary)

MEDIUM

Science>Physics>Observing Space : Telescopes>Telescope

Study the figure and answer the following questions.

Question Image
Explain the working of the above telescope.

MEDIUM

Science>Physics>Observing Space : Telescopes>Telescope

Answer the following questions and arrange the letters you get inside the coloured boxes in the order given below the questions to spell out the name of a famous bacteriologist.

Instrument required to view microbes-
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