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 year is used to measure the distance between stars because of the----.
A weight
B lightness
C vastness
D huge distance
The green light only ever goes on when tank A is full and tank C isn't empty. The red light is always on unless either tank A isn't Full or tank B is empty. Given that the green light is on, we can conclude all of the following EXCEPT---
A Tank A cannot be empty
B The red light must be on
C Tank C cannot be empty
D we don't have enough information to determine whether tank B is empty or not
The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A 32%
B 40%
C 48%
D 60%
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
A Raman spectra
B Absorption spectra
C Emission spectra
D Fluorescence
________ 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
The constellations of stars appear at different positions in the sky at different times during night mainly ________
A Because earth rotates about its axis
B Because earth revolves round the sun
C Because of optical illusion
D Because celestial bodies are changing their positions all the time
Pole Star is always seen at one point in the sky whereas other stars are not; this is because ________
A Pole star rotates with the same period as the earth
B Pole star is a star of our own galaxy
C Sun and Pole star are in two opposite directions relative to earth
D Pole star lies in the axis of spin of the earth

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