Question 1

A telescope is used to:

Accepted Answer

observe distant celestial objects by collecting more light. A telescope gathers light from far-off objects, making them appear brighter and larger.

Question 2

A refracting telescope forms images using ______, while a reflecting telescope uses ______:

Accepted Answer

lenses; mirrors. Refractors use lenses to bend light; reflectors use curved mirrors to gather and focus it.

Question 3

The famous space telescope that orbits the Earth above the atmosphere is the:

Accepted Answer

Hubble Space Telescope. The Hubble Space Telescope orbits Earth, giving clear images free of atmospheric distortion.

Question 4

A telescope with a larger objective (aperture) is better because it:

Accepted Answer

collects more light and can show fainter objects. A bigger aperture gathers more light, allowing fainter and more distant objects to be seen.

Question 5

A radio telescope is used to detect ______ coming from space:

Accepted Answer

radio waves. Radio telescopes collect radio-wave signals emitted by celestial objects.

Question 6

The scientist who first used a telescope to study the sky (observing Jupiter's moons and craters on the Moon) was:

Accepted Answer

Galileo Galilei. Galileo pioneered telescopic astronomy in the early 17th century.

Telescopes — Homi Bhabha Exam Physics MCQs with Solutions

Questions with solutions