Sci-Five | The Hindu Science Quiz: on James Webb Space Telescope

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. The James Webb Space Telescope recently sent back images of different parts of the cosmos. What was the part of the light spectrum used by the cameras onboard the JWST?

Ultraviolet

The JWST has cameras onboard that are sensitive to light in the range of approximately 0.6 micrometres to 27 micrometres.

Visible light

The JWST has cameras onboard that are sensitive to light in the range of approximately 0.6 micrometres to 27 micrometres.

Infrared

The JWST has cameras onboard that are sensitive to light in the range of approximately 0.6 micrometres to 27 micrometres.

Radio waves

The JWST has cameras onboard that are sensitive to light in the range of approximately 0.6 micrometres to 27 micrometres.

. What is the metal most commonly used to create a reflecting surface in liquid mirror telescopes?

Thallium

Most recently the International Liquid Mirror Telescope Set up in Devasthal near Nainital has used about 700 kg of mercury which is rotated to get a paraboloid reflecting surface. 

Gallium

Most recently the International Liquid Mirror Telescope Set up in Devasthal near Nainital has used about 700 kg of mercury which is rotated to get a paraboloid reflecting surface. 

Mercury

Most recently the International Liquid Mirror Telescope Set up in Devasthal near Nainital has used about 700 kg of mercury which is rotated to get a paraboloid reflecting surface. 

Silver

Most recently the International Liquid Mirror Telescope Set up in Devasthal near Nainital has used about 700 kg of mercury which is rotated to get a paraboloid reflecting surface. 

. This telescope was launched in 1990 by NASA and is one of the largest, most versatile to date. Who is it named after?

Lyman Spitzer

Edwin Powell Hubble was an American Astronomer who lived from 1889 to 1953. He showed that many objects that were earlier thought to be cosmic dust were galaxies outside the Milky Way. 

Edwin Hubble

Edwin Powell Hubble was an American Astronomer who lived from 1889 to 1953. He showed that many objects that were earlier thought to be cosmic dust were galaxies outside the Milky Way. 

Subrahmanyan Chandrasekhar

Edwin Powell Hubble was an American Astronomer who lived from 1889 to 1953. He showed that many objects that were earlier thought to be cosmic dust were galaxies outside the Milky Way. 

James Webb

Edwin Powell Hubble was an American Astronomer who lived from 1889 to 1953. He showed that many objects that were earlier thought to be cosmic dust were galaxies outside the Milky Way. 

. What is special about the L-2 Lagrange point, the home of the JWST?

It is a point between Sun and Earth

It is also a point where the gravitational attraction of the Sun and Earth on the JWST cancel each other. 

It is on the Sun-Earth line with the Earth in between

It is also a point where the gravitational attraction of the Sun and Earth on the JWST cancel each other. 

It is on an equilateral Triangle made by Sun, Earth and itself

It is also a point where the gravitational attraction of the Sun and Earth on the JWST cancel each other. 

It is equidistant from Sun and Earth

It is also a point where the gravitational attraction of the Sun and Earth on the JWST cancel each other. 

. Who among the following was the first astronomer to propose a telescope in space?

Edwin Hubble

Lyman Spitzer, American Astronomer was the first to propose such an idea in 1946. After much groundwork this materialized into the Hubble Space Telescope. 

Lyman Spitzer

Lyman Spitzer, American Astronomer was the first to propose such an idea in 1946. After much groundwork this materialized into the Hubble Space Telescope. 

Carl Sagan

Lyman Spitzer, American Astronomer was the first to propose such an idea in 1946. After much groundwork this materialized into the Hubble Space Telescope. 

Vera Rubin

Lyman Spitzer, American Astronomer was the first to propose such an idea in 1946. After much groundwork this materialized into the Hubble Space Telescope.