Home
Class 11
PHYSICS
Calculate the solid angle subtended by t...

Calculate the solid angle subtended by the periphery of an area of `1 cm^2` at a point situated symmetrically at a distance of 5 cm from the area.

Text Solution

Verified by Experts

Area, `A= 1 cm^(2)`
Radius, r= 5cm
Solid angle `=(A)/(r^2)`
`=(1cm^2)/((5cm)^2)= (1)/(25)sr`
`=4xx10^(-2)sr`
Promotional Banner

Topper's Solved these Questions

  • UNITS AND MEASUREMENT

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS & ADVANCED LEVEL|4 Videos

  • UNITS AND MEASUREMENT

    MODERN PUBLICATION|Exercise REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)|49 Videos

  • UNITS AND MEASUREMENT

    MODERN PUBLICATION|Exercise NCERT FILE (EXEMPLAR PROBLEMS OBJECTIVE QUESTIONS)|18 Videos

  • THERMAL PROPERTIES OF MATTER

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|15 Videos

  • WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

The solid angle subtended by the periphery of an area 1cm^(2) at a point situtated symmetrically at a distance of 5 cm from the area is

A pair of tangents can be constructed from a point P to a circle of radius 3.5 cm situated at a distance of 3 cm from the centre.

Calculate the time period of a particle whose acceleration is 5 cm s^(-2) at a distance of 5 cm from the mean posiiton.

The angle subtended by a coin of radius 1 cm held at a distance of 80 cm from your eyes is

A chord of length 10 cm subtends an angle of 120^(@) at the centre of the circle. Find the distance of the chord from the centre.

Find the area of a trapezium whose parallel sides of lengths 10cm and 15cm are at a distance of 6cm from each other.Calculate this area as the sum of the areas of two triangles and one rectangle.the difference of the area of a rectangle and the sum of the areas of two triangles.

A solid cylinder carries current of 1 A uniformly distributed over its cross sectional area. Calculate the magnetic field induction at point P, at a distance of 3 cm from the axis of cylinder, if its radius is 7 cm .

MODERN PUBLICATION-UNITS AND MEASUREMENT-NCERT FILE (EXEMPLAR PROBLEMS SUBJECTIVE QUESTIONS)
  1. Why do we have different units for same physical quantity?

    Text Solution

    |

  2. The radius of atom is of the order of 1 Å and radius of nucleus is of ...

    Text Solution

    |

  3. the device used for measuring the mass of atoms and molecules is

    Text Solution

    |

  4. Express unified atomic mass unit in kg.

    Text Solution

    |

  5. A function f(theta) is defined as : f(theta) = 1 - theta+(theta^2)/(2!...

    Text Solution

    |

  6. Why length, mass and time are chosen as base quantities in mechanics ?

    Text Solution

    |

  7. (a) The earth- moon distance is about 60 earth radius. What wil be th...

    Text Solution

    |

  8. Which of the following time measuring devices is most precise ? (a) A ...

    Text Solution

    |

  9. The distance of a galaxy is of the order of 10^(25)m. Calculate the or...

    Text Solution

    |

  10. The vernier scale of a travelling microscope has 50 division which coi...

    Text Solution

    |

  11. During a total solar ecilpse the moon almost entirely covers the spher...

    Text Solution

    |

  12. If the unit of force is 100 N, unit of length is 10m and unit of time ...

    Text Solution

    |

  13. Give an example of (a) a physical quantiy which has a unit but no dime...

    Text Solution

    |

  14. Calculate the length of the arc of a circle of radius 31.0 cm which su...

    Text Solution

    |

  15. Calculate the solid angle subtended by the periphery of an area of 1 c...

    Text Solution

    |

  16. The displacement of a progressive wave is represented by y = A sin (om...

    Text Solution

    |

  17. Time for 20 oscillations of a pendulum is measured as t1 = 39.6 s , t2...

    Text Solution

    |