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If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference toi) altitude bubble on index frameii) altitude bubble on index frame if it is to be used as a leveliii) altitude bubble on telescopeiv) altitude bubble on telescope if it is to be used as a level The correct answer is
If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to
i) altitude bubble on index frame
ii) altitude bubble on index frame if it is to be used as a level
iii) altitude bubble on telescope
iv) altitude bubble on telescope if it is to be used as a level
The correct answer is
Consider the following statements relating zones of atmosphere to altitude: 1. Temperature decreases with altitude in troposphere. 2. Speed of sound decreases with altitude in troposphere. 3. Temperature increases with altitude in stratosphere. 4. Ozone is present in stratosphere which protects people from harmful effects of solar radiation. Which of the above statements are correct?
Consider the following statements regarding winds 1. The air at ITCZ rises and moves towards poles in the upper atmosphere and sinks near 30 degrees in both hemispheres and then again moves toward the equator at the surface, this cycle is known as Walker Cycle. 2. At polar latitudes the cold dense air subsides near the poles and blows towards middle latitudes as the polar easterlies. This cell is called the polar cell. Which of the statements given above is/are correct?
Which one of the following pairs of properties of typical air masses is correct? Air Mass Source Region A. Maritime Equatorial Warm oceans in the equatorial zone B. Maritime Polar Warm oceans in the tropical zone C. Continental Tropical Less warm oceans in the tropical zone D. Continental Polar Moist oceans in the polar zone
Which of the following statements are correct? a. HF and H2O are polar molecules. b. CH4 and CO2 are non-polar molecules. c. CO2 and SO2 are non-polar molecules.
Consider the following statements.
1. Geostationary satellites are used to reflect TV signals and telecast TV programmes from one part of the world to another.
2. Polar satellites are used for weather forecasting.
Which of the statements given above is/are correct?
Polar orbiting satellites are generally placed at an altitude range of __________
With reference to India's satellite launch vehicles, consider the following statements: 1. PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites. 2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth. 3. GSLV Mk III is a four- staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines. Which of the statements given above is/are correct?
Elon Musk's SpaceX creates a new world record by launching many satellites on a single rocket. Consider the following statements in this regard: 1. This created a new world record by launching 143 satellites on a single rocket. 2. It includes commercial and government CubeSats, microsats, and 10 Starlink satellites. Which statements given above is/are correct?