Related Questions

Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as ________
A Cosmic stars
B Quasars
C Binaries
D Novae and supernovae
The Hubble Space Telescope will search for planets around other stars, a key to the . . . . . . . . for extra terrestrial life, and examine interstellar dust and gases out of which stars are born.
A discovery
B perception
C quest
D enquiry
The Hubble Space Telescope will search for planets around the stars, a key to the ...... extraterrestrial life, and examine interstellar dust and gases out of which stars are born.
A perception
B discovery
C enquiry
D quest
Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in
A 4.2 seconds
B 42 seconds
C 4.2 years
D 42 years
The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than
A 0.01 second
B 0.001 second
C 0.0001 second
D None of these
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
________ birds navigate using celestial cues from the sun and stars, the earth's magnetic field, and probably also mental maps.
A Migration
B Migrating
C Migrate
D Migrated
চাঁদের অভিকর্ষজ ত্বরণ পৃথিবীর অভিকর্ষজ ত্বরণের ছয় ভাগের এক ভাগ। চাঁদের ব্যাসার্ধ পৃথিবীর ব্যাসার্ধের এক- চতুর্থাংশ। পৃথিবীর ভর M-এর তুলনায় চাঁদের ভর কত? (The acceleration due to gravity on the Moon is one-sixth of that on the Earth. The radius of the Moon is one-fourth that of the Earth. What is the mass of the Moon compared to that of the Earth, M?)
A M/6
B M/16
C M/24
D M/96
Which one of these planets is nearest to the earth?
A Mercury
B Venus
C Neptune
D None of the Above
Which planet is the nearest in size to Earth?
A Mercury
B Mars
C Venus
D Saturn

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