Home
Class 12
PHYSICS
A and B are two points on uniform metal ...

`A` and `B` are two points on uniform metal ring whose centre is `O` The angle `AOB =theta` A and `B` are maintaind at two different constant temperatures When `theta =180^(@)` the rate of total heat flow from `A` to `B` is `1.2W` When `theta =90^(@)` this rate will be .

A

`0.6 W`

B

`0.9 W`

C

`1.6 W`

D

`1.8 W`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NEET MOCK TEST 16

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NEET MOCK TEST 18

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A uniform metal ring with centre C have two points A and B such that angle ACB is theta . A and B are maintained at two different constant temperature. If the angle between A and B i.e. theta=180^(@) the rate of heat flow from A and B is 1.2W , then what will be the rate, when theta=90^(@) ?

A and B are two points on a uniform ring of resistance R the /_ASCB=theta , whre C is the centre of the sign. The equivalent reisrtance between A and b

Two conducting rods when connected between two points at constant but different temperatures separately, the rate of heat flow through them is q_1 and q_2 .

The path of a charged particle in a uniform magnetic field depends on the angle theta between velocity vector and magnetic field, When theta is 0^(@) or 180^(@), F_(m) = 0 hence path of a charged particle will be linear. When theta = 90^(@) , the magnetic force is perpendicular to velocity at every instant. Hence path is a circle of radius r = (mv)/(qB) . The time period for circular path will be T = (2pim)/(qB) When theta is other than 0^(@), 180^(@) and 90^(@) , velocity can be resolved into two components, one along vec(B) and perpendicular to B. v_(|/|)=cos theta v_(^)= v sin theta The v_(_|_) component gives circular path and v_(|/|) givestraingt line path. The resultant path is a helical path. The radius of helical path r=(mv sin theta)/(qB) ich of helix is defined as P=v_(|/|)T P=(2 i mv cos theta) p=(2 pi mv cos theta)/(qB) Two ions having masses in the ratio 1:1 and charges 1:2 are projected from same point into a uniform magnetic field with speed in the ratio 2:3 perpendicular to field. The ratio of radii of circle along which the two particles move is :

P and Q are two points on a circle of centre C and radius alpha. The angle PCQ being 2 theta ,find the value of sin theta when the radius of the circle inscribed in the triangle CPQ is maximum.

The ends of a metal rod are kept at temperatures theta_1 and theta_2 with theta_2gttheta_1 . The rate of flow of heat along the rod is directly proportional to

The two ends of a uniform rod of thermal conductivity k are maintained at different but constant temperatures. The temperature gradientat any point on the rod is (d theta)/(dl) (equal to the difference in temperature per unit length). The heat flow per unit time per unit cross-section of the rod is l then which of the following statements is/are correct:

NTA MOCK TESTS-NEET MOCK TEST 17-PHYSICS
  1. Two stationary soruces of sound, S(1) and S(2) having an equal frequen...

    Text Solution

    |

  2. The displacement time graph for two sound waves A and B are shown in t...

    Text Solution

    |

  3. A and B are two points on uniform metal ring whose centre is O The ang...

    Text Solution

    |

  4. The displacement of a particle ( in meter ) from its mean position is ...

    Text Solution

    |

  5. The escape velocity from the earth is about 11 km/s. The escape veloci...

    Text Solution

    |

  6. A small block of super dense material has mass 2 xx 10^(24) kg. It is...

    Text Solution

    |

  7. The position vector of a particle is vec( r ) = ( 3 hat( i ) + 4 hat( ...

    Text Solution

    |

  8. The rope shown in figure is wound around a cylinder of mass 4 kg and m...

    Text Solution

    |

  9. A square of a side a is cut from a square of side 2a as shown in the f...

    Text Solution

    |

  10. Assuming that potential energy of spring is zero when it is stretched ...

    Text Solution

    |

  11. The solid rubber balls A and B having masses 200 and 400 gm respectiv...

    Text Solution

    |

  12. A particle of mass 100 gm moves in a potential well given by U = 8 x^(...

    Text Solution

    |

  13. In the figure shown, the capacity of the condenser C is 2 mu F . The c...

    Text Solution

    |

  14. A P-N junction diode connected to a battery of e.m.f. 4.5 V and an ext...

    Text Solution

    |

  15. The circuit diagram (see fig.) shows a 'logic combination' with the st...

    Text Solution

    |

  16. A solid sphere of radius R has charge q uniformly distributed over its...

    Text Solution

    |

  17. A particle of mass m and charge q is thrown from a point in space wher...

    Text Solution

    |

  18. In a potential meter arrangement shown in fig. The balancing length fo...

    Text Solution

    |

  19. Two charged particle M and N are projected with same velocity in a uni...

    Text Solution

    |

  20. The average radius of an air cored made toroid is 0.1 m and it has 500...

    Text Solution

    |