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SL ARORA-Units and Measurements-Exercise
- Write the order of magnitude of the following : (i) 8 (ii) 49 (...
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- What is one astronomical unit ? Express it in metres . Write its or...
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- What is the order of magnitude of second in a day ?
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- In a submarine fitted with a SONAR, the time between the genretaion of...
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- A radar signal is beamed towards a planet and its echo is recived 7 mi...
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- A rock under water is 1595 m deep. Find the time in which an ultrasoni...
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- The angle of elevation of the top of a hill is 30^(@) from a point on ...
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- The moon subtends an angle of 57 minutes at the base line equal to rad...
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- The parallax of a heavenly body measured from two points diametrically...
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- Assuming that a planet goes round the sun in a circular orbit of radiu...
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- Compare the period of rotation of planet Mars about the sun with that ...
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- A drop of olive oil of radius 0.3 mm spreads into a rectangular film o...
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- IF the size of an atom ( = 1Å) were enlarged to the tip of a sharp pin...
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- If an atom of size 10^(-10)m were enlarged to the size of the earth (~...
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- if the universe were shrunk to the size, of earth, how large would the...
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- A neutron star has a density equal to that of nuclear matter (~= 2.8X0...
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- Which type of phenomenon can be used as a measure of time ? Given thre...
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- Why has 'second' been defined in terms of periods of radiation from Ce...
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- The average life of an Indian is 56 years .Find the number of times th...
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- The mean life of an elementary particle pion is 2xx10^(-7) ns. The age...
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