Home
Class 11
PHYSICS
Choose the correct options A block of w...

Choose the correct options
A block of wood moves a distance 5 cm along a straight line under the action of force of 2.5 dyne. If the work done is 6.25 erge, the angle which the force makes with the direction of motion of the body is.

A

`90^@`

B

`60^@`

C

`45^@`

D

`30^@`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    CHETANA PUBLICATION|Exercise EXERCISE|76 Videos
  • MAGNETISM

    CHETANA PUBLICATION|Exercise EXERCISE|118 Videos

Similar Questions

Explore conceptually related problems

Choose the correct options A force applied to a packet resting on smooth horizontal plane making an angle of 45^@ , displaces it through 4 m. If the work done in moving the packets is 16 J, the force applied is

Choose the correct options The rough surface of a horizontal table offers a definite maximum opposing force to initiate the notion of a block along the table, which is the motion of a block along the table, which is proportional to the resultant normal force given by the table. Forces F_1 and F_2 act at the same angle theta with the horizontal and both are just initiating the slide motion of the block along the table. Force F_1 is a pulling force while the force F_2 is a pushing force. F_2>F_1 , because

Choose the correct options A force F = (0.5x + 12) N acts on a particle. If x is in metres, calculate the work done by the force during the displcement of the particle from x= 0 to x = 4 m

A block of mass 1 kg starts from rest at x = 0 and moves along the X - axis under the action of a force F = kt, where t is time and k=1" Ns"^(-1) . The distance, the block will travel in 6 seconds is

Chose the correct option A force oversetrarrF = (2hati- 10hatj + 12hatk) N acts as a particle which moves along the positive Z axis. If it covers a distance of 10 m, the work done is

A uniform magnetic field of 1.5 T exists in a cylindrical region of radius 10.0 cm, its direction parallel to the axis along east to west. A wire carrying current of 7.0 A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire. If, the wire in the N - S direction is lowered from the axis by a distance of 6.0 cm ?

Choose the correct option? The distance between two consecutive crests in a wave train produced in a string is 5 cm. If 2 complete waves pass through any point per second, the velocity of the wave is A. 10 cm//s B. 2.5 cm//s C. 5 cm//s D. 15 cm//s

The dipole moment of water molecule is 6.3 xx 10^-30 Cm . A sample of water contains 1021 molecules, whose dipole moments are all oriented in an electric field of strength 2.5 xx 10^5 N//C . Calculate the work to be done to rotate the dipoles from their initial orientation theta_1 = 0 to one in which all the dipoles are perpendicular to the field, theta_2 = 90^@ .

A body of mass 6kg is under a force which causes displacement in it given by S= (t^(2))/(4) maters where t is time . The work done by the force in 2 sec is

Select and write correct alternative from the following alternatives:- The work done to move a charge of 5muC through a distance of 2cm on an equipotential surface is

CHETANA PUBLICATION-LAWS OF MOTION -EXERCISE
  1. Choose the correct options A light and heavy body have equal K.E Whic...

    Text Solution

    |

  2. Choose the correct options Choose the WRONG statement.

    Text Solution

    |

  3. Choose the correct options A block of wood moves a distance 5 cm alon...

    Text Solution

    |

  4. Choose the correct options A force applied to a packet resting on smo...

    Text Solution

    |

  5. Choose the correct options A ball of mass 5 kg travelling with veloci...

    Text Solution

    |

  6. Choose the correct options When the bodies stick together after colli...

    Text Solution

    |

  7. Choose the correct options A force F = (0.5x + 12) N acts on a partic...

    Text Solution

    |

  8. Choose the correct options A block of mass m moving at a speed of u c...

    Text Solution

    |

  9. Choose the correct options If the relative displacement between any t...

    Text Solution

    |

  10. Choose the correct options A bomb of mass 9 kg explodes into two piece...

    Text Solution

    |

  11. Choose the correct options The cofficient of restitution will NOT hav...

    Text Solution

    |

  12. Choose the correct options A frame of reference which moves with cons...

    Text Solution

    |

  13. Choose the correct options Non-inertial frame of reference has

    Text Solution

    |

  14. Choose the correct options When a body is at rest, then

    Text Solution

    |

  15. Choose the correct options The turning effect of the applied force doe...

    Text Solution

    |

  16. Choose the correct options What is the torque of force f=(2i-3j+4k) ac...

    Text Solution

    |

  17. Choose the correct options A mass of 10 kg is suspended from a rope wo...

    Text Solution

    |

  18. Choose the correct options Centre of mass of body lies

    Text Solution

    |

  19. Choose the correct options The centre of mass of a system of two unifo...

    Text Solution

    |

  20. Choose the correct options For a circular ring centre of gravity lies

    Text Solution

    |