TOP 100 Physics MCQS
All Questions for: TOP 100 Physics MCQS
Question 701: Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?
- A magnetic flux
- B self inductance
- C magnetic induction
- D magnetic field intensity
Explanation:
Question 702: Compton
- A Arthur Holly Compton
- B Mosely
- C Stefan Boltzman
- D Marley
Explanation:
Question 703: The co efficient of linear expansion is equal to__________?
- A ?L/L?T
- B L?T/?L
- C ?L = ?L?T
- D ?L?T-?L
Explanation:
Question 704: The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________?
- A 180
- B 60
- C 45
- D 30
Explanation:
Question 705: An alternating current or voltage_____________________?
- A changes its direction again and again
- B fluctuates off and on
- C varies in magnitude alone
- D changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals
Explanation:
Question 706: In multimode step index fibre the refractive index of core and cladding is____________?
- A different with refractive index of core higher than cladding
- B different
- C same
- D zero
Explanation:
Question 707: Beta particles ionize an atom_________________?
- A Due to the electrostatic force of repulsion
- B Due to the electrostatic force of attraction
- C Due to the gravitational force
- D Due to a direct collision
Explanation:
Question 708: The dimension of torque is______________?
- A [MLT-2]
- B [ML2T]
- C [ML2T-2]
- D [ML-2T-2]
Explanation:
Question 709: If a wheel of radius r turns through an angle of 30
- A ?/6 x r
- B V/30 x r
- C ? /3 x r
- D ? / 180 x r
Explanation:
Question 710: Linear momentum of a photon is_______________?
- A hv/c2
- B hv/c
- C zero
- D c2/hv
Explanation: