Physics Questions

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Competitive Exams Physics Objective questions Part 20 

Q-1. Magnetic field is measured in 

(a) Weber 
(b) Hennery
 (c) Weber(metre)2 
(d) Weber/(metre)2 

Q-2. The dimensions of Plank’s constant are 

(a) [ML2T1]
 (b) [ML3T1] 
(c) [ML−2T1] 
(d) [MoL−1T3

 Q-3. The speed of boat is 5 km/hr in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. Then velocity of river is 

(a) 4 km/hr 
(b) 3 km/hr 
(c) 2 km/hr 
(d) 1 km/hr 

Q-4. A bullet is dropped from the same height when another bullet is fired horizontally. They will hit the ground 

(a) Simultaneously
 (b) One after the other 
(c) Depends on the observer 
(d) Depends up on mass of bullet 

Q-5.The displacement of a particle moving in a straight line depends on time(t) as: x=αt3+βt2+γt+δ. The ratio of its initial acceleration to its initial velocity depends 

(a) Only on α 
(b) Only on αandβ 
(c) Only on βandγ 
(d) Only on αandγ