Related Questions

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%
The only planet whose period of rotation is longer than the period of revolution around the Sun?
A Mercury
B Jupiter
C Venus
D Neptune
Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . A fly crawls around the outside of a circle once.A second fly crawls around the outside of a square once.Which fly travels further ? (1) The diagonal of the square is equal to the diagonal of the circle.(2) The fly crawling around the circle took more time to complete has journey than the fly cawing around the square.
A A
B B
C C
D D
If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
A Bashar, three times more
B Rahim , three times more
C They both go around 12 times
D Bashar, eight times more
The period of one revolution of sun around the centre of galaxy is called ________
A Parsec
B Astronomical year
C Cosmic year
D Light year
Which of the following Scientist proved that the path of each planet around the Sun is elliptical?
A Kepler
B Galileo
C Newton
D Copernicus
What is the name of the recently discovered planet that is not roaming around the sun ? সম্প্রতি কোন গ্রহ আবিষ্কার হয়েছে যেটি সূর্যকে প্রদক্ষিণ করে না?)
A Kepler-1649C
B Kepler-1549D
C Haeckel - 1449C
D Hubble-1560C
m ভরের একটি উপগ্রহ R ব্যাসার্ধের একটি বৃত্তাকার কক্ষপথে M ভরের একটি গ্রহকে প্রদক্ষিণ করে। একটি পূর্ণ ঘূর্ণনের জন্য প্রয়োজনীয় সময় নিচের কোনটির সমানুপাতিক? (A satellite of mass m orbits a planet of mass M in a circular orbit of radius R. The time required for one complete revolution is proportional to which of the following?)
A M
B R3/2
C R2
What is called the maximum distance from the Sun in a planet in its orbit?
A Perihelion
B Aphelion
C Apogee
D Perigee
The orbits of planets around the Sun, or of satellites around the Earth, can be ________
A Circular and elliptic
B Circular and hyperbolic
C Elliptic and parabolic
D Parabolic and hyperbolic

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