Related Questions

The unit used to measure the distance between stars is-
A Light year
B Cosmic kilometer
C Steller mile
D Galactic unit
E None
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
The light coming from stars gives the idea of their ________
A Size
B Rotational speed
C Mass
D Temperature
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
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
A High neutron absorption cross-section
B Low moderating efficiency
C High neutron scatter cross-section
D Low neutron absorption cross-section
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%
With a uniform speed , a car covers a distance in 8 hours . Had the same distance could have been increased by 4 km/hr. The same distance could have been covered in 7 hours and 30 minutes. What is the distance covered?
A 420 km
B 480 km
C 520 km
D 640 km

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