यदि साबुन के दो भिन्न-भिन्न व्यास के बुलबुलों को एक नली द्वारा एक-दूसरे के संपर्क में लाया जाए, तो क्या घटित होगा?
If two soap bubbles of different diameters are brought into contact with each other through a tube, 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 two soap bubbles of different diameters are brought into contact with each other through a tube, what will happen?
When an air bubble rises from the bottom of a lake to the upper surface, its size will -
A liquid is flowing in a streamline manner through a cylindrical pipe. The velocity profile of flow in a cross-section along the axis of the pipe will be -
Assertion (A): An iron ball floats on mercury, but sinks in water. Reason (R): The relative density of iron is higher than the relative density of mercury. Code:
The reason for kerosene rising up in the wick of a stove is -
A drop of water is spherical due to -
Water drops do not stick to an oily surface due to -
Four wires made of the same material whose dimensions are given below are stretched by the same load one by one. In which of these will the elongation be maximum?
In winter, when the upper surface of a lake freezes into ice, aquatic creatures still survive because -
Why does an iron nail float on mercury, whereas it sinks in water?
A geostationary/satellite moves continuously in its orbit due to centripetal force which is provided by—
The known fundamental forces of nature can be categorized into four classes: gravitation, electromagnetism, weak nuclear force, and strong nuclear force. Which one of the following statements about them is NOT correct?
Pendulum clocks slow down in summer because—
The escape velocity from Earth's surface is—
Which of the following is in correctly matched order— Discovery / Invention Scientist A. Radium 1. Alexander Fleming B. Penicillin 2. Madam Curie C. X-ray 3. Edward Jenner D. Smallpox (Vaccine) 4. W. K. Roentgen Code:
A pendulum clock can run faster in—
What is the primary reason for the absence of an atmosphere on the Moon?
An artificial satellite orbiting the Earth does not fall down because Earth's gravitational attraction—
If the gravitational force of the Earth suddenly disappears, which of the following will be the correct consequence?
When will a person sitting in an elevator feel heavier than their actual weight?
Consider the following statements regarding a simple pendulum undergoing oscillation: 1. When the bob passes through the mean position, acceleration is zero. 2. In each cycle, the bob attains a given speed twice. 3. At the extreme positions, both velocity and acceleration are zero. 4. The amplitude of oscillation decreases over time under damping. Which of these statements are correct?
A satellite keeps revolving around the Earth in its orbit due to—
A girl is swinging on a swing in sitting position. When the girl stands up, the time period of oscillation will—
The Earth rotates in its orbit at an approximate speed of 4400 km/hr. Why do we not feel this rapid motion?
The time period of a simple pendulum—