अगर किसी वस्तु को 8 किमी. प्रति सेकंड के वेग से अंतरिक्ष में फेंका जाए, तो क्या होगा?
If a projectile is launched into space with a velocity of 8 km/s, what will happen?
Comprehensive collection of questions from General Science asked in recent state service examinations. Each question is verified with official answer keys and step-by-step bilingual solutions.
If a projectile is launched into space with a velocity of 8 km/s, what will happen?
An artificial satellite can be tracked very precisely from Earth by using—
Weight of a body is—
Two balls A and B are of 10 kg and 1 kg respectively. They are dropped simultaneously from a height of 20 m. Which of the following is correct?
Astronauts cannot stand erect in vacuum / space because—
When iron and wooden balls of equal weight are dropped from the same height in air-
Pieces of wood, iron, and wax of equal dimensions are dropped from the same height to the earth. Which piece will reach the earth's surface first?
An object has a mass of 100 kg on Earth ($g_e = 10 \text{ m/s}^2$). If the acceleration due to gravity on the Moon is ($g_e/6$), then the mass of the object on the Moon will be—
Weightlessness is—
Who among the following had anticipated Newton by declaring that all things gravitate to the Earth?
A smooth inclined plane is inclined at an angle $\theta$ with horizontal. A body released from rest slides down the inclined surface of length $l$ and height $h$. The time taken to reach the bottom is—
If an apple is released from an orbiting spaceship, it will—
The acceleration due to gravity for a catastrophic earthquake would be-
When an object is dropped from a height, its weight is—
The Leaning Tower of Pisa does not fall because—
Assertion (A): Weight of a human on the Moon is 1/6th of that on the Earth. Reason (R): The Moon has no gravity like the Earth. Select the correct answer from the codes below:
If the mass of the Earth remains constant and its radius decreases by 1%, the value of g on the Earth's surface would—
Who gave the theory of gravitation?
Who propounded the universal law of gravitation—
If the distance between the Earth and the Sun were twice its present value, the gravitational force exerted on the Earth by the Sun would be—
A body has maximum weight in which of the following?
A ball is dropped from a high building with a uniform acceleration of 9.8 m/s$^2$. What will be its velocity after 3 seconds?
The weight of the human body is—
For a particle falling freely from rest under gravity, which graph correctly represents displacement (d) versus time (t)?
A person is standing on a sensitive balance. If he inhales deeply, the reading of the balance will—