Home
Class 12
PHYSICS
The Sun's angular diameter is measured t...

The Sun's angular diameter is measured to be 1920''. The distance D of the Sun from the Earth is `1.496xx10^(11) m`. What is the diameter of the sun ?

Text Solution

Verified by Experts

Sun's angular diameter a = 1920'' `" (The unit is second)"`
`"1'' (seconds)"=(1')/(60)"(minutes)"=(1)/(60)xx(1^(@))/(60)" (degrees)"=(1)/(60)xx(1)/(60)xx(pi)/(180)" radians "=4.85xx10^(-6)" rad"`
`=1920xx4.85xx10^(-6)" rad "=9.31xx10^(-3)" rad"`
Sun's diameter`" "d=aD=1.39xx10^(9)m`
Promotional Banner

Topper's Solved these Questions

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise SOLVED EXAMPLES|20 Videos

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise PRACTICE EXERCISE - 1|11 Videos

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise Impeccable|51 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|56 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2 (TRUE FALSE TYPE)|4 Videos

Similar Questions

Explore conceptually related problems

The sun's angular diameter is measured to be 1920''. The distance of the sun from the earth is 1.496xx10^(11)m. What is the diameter of the sun?

The sun's angular diameter is measured to be 1920''. The distance of the sun from the earth is 1.496xx10^(11)m. What is the diameter of the sun?

A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10cm . The diameter of the sun is 1.39xx10^(9)m and its mean distance from the earth is 1.5xx10^(11)m . What is the diameter of the sun's image on the paper ?

What is the order of magnitude of the distance of the sun from the earth in SI unit?

What is the order of magnitude of the distance of the sun from the earth in SI unit?

The earth receives its surface radiation from the sun at the rate of 1400 W//m^(2) . The distance of the centre of the sun from the surface of the earth is 1.5 xx 10^(11) m and the radius of the sun is 7.0 xx 10^(8) m. Treating sun as a black body, it follows from the above data that its surface temeperature is

The radius of the sun is 0.75xx10^(8)m and its distance from the earth is 1.5xx10^(11)m . Find the diameter of the image of the sun formed by a lens of focal length 40 cm

The diameter of the sun is 1.4 X 10^9m and its distance from the earth is 1.5 X 10^11 m . Find the radius of the image of the sun formed by a lens of focal length 20 cm.

Compare the distance of the sun from the earth and the distance of the mars from the Earth if the Sun is 1.5xx10^(8) km from the Earth and the Mars is 5.5xx10^(7) km from the Earth.

A man is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm . The diameter of the sun is 1.39 xx 10^(9) m and the diameter of the sun's image on the paper is

VMC MODULES ENGLISH-UNITS, MEASUREMENTS & ERRORS-Illustration
  1. The SI units of force is newton such that 1N="1kg ms"^(-2). In C.G.S. ...

    Text Solution

    |

  2. Young 's modulus of steel is 2.0 xx 10^(11)N/m^(2) . Express it is "dy...

    Text Solution

    |

  3. The Sun's angular diameter is measured to be 1920''. The distance D of...

    Text Solution

    |

  4. What is the dimensional formula of angular velocity?

    Text Solution

    |

  5. The dimensional formula for Planck's constant (h) is

    Text Solution

    |

  6. The velocity of sound in a gas depends on its pressure and density . O...

    Text Solution

    |

  7. In a new system of units, unit of mass is taken as 50 kg. unit of leng...

    Text Solution

    |

  8. The period P of a simple pendulum is the time for one complete swing. ...

    Text Solution

    |

  9. The van der Waal's equation of state for some gases can be expressed a...

    Text Solution

    |

  10. If the energy ( E) ,velocity (v) and force (F) be taken as fundamental...

    Text Solution

    |

  11. Consider the equation F=(a^(2))/(b)e^(-(bx)/(E )) where F is force x i...

    Text Solution

    |

  12. A screw gauge has main scale divisions of 1 mm each and its circular s...

    Text Solution

    |

  13. If mass of an object measured is 4.237 gm (four significant figure) an...

    Text Solution

    |

  14. The sum of the numbers 436.32, 227.2 and 0.301 in appropriate signific...

    Text Solution

    |

  15. Round off the following numbers to three significant digits (a) 14.7...

    Text Solution

    |

  16. Round off the following numbers to three significant digits (b) 14.7...

    Text Solution

    |

  17. Round off the following numbers to three significant digits (c ) 14....

    Text Solution

    |

  18. The original length of wire is (153.7 pm 0.6) cm. It is streched to (1...

    Text Solution

    |

  19. The measures of the lengths of a rectangle are l=(3.00 pm 0.01)cm and ...

    Text Solution

    |

  20. The change in the velocity of a body is (12.5pm 0.2)m//s in a time (5....

    Text Solution

    |