Physics-
General
Easy
Question
Statement 1: The vector 
is a unit vector.
Statement 2: Unit vector is one which has unit magnitude and a given direction.
- Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
- Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
- Statement 1 is True, Statement 2 is False
- Statement 1 is False, Statement 2 is True
The correct answer is: Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
Related Questions to study
Physics-
Statement 1: In circular motion, the centripetal and centrifugal force acting in opposite direction balance each other
Statement 2: Centripetal and centrifugal forces don’t act at the same time
Statement 1: In circular motion, the centripetal and centrifugal force acting in opposite direction balance each other
Statement 2: Centripetal and centrifugal forces don’t act at the same time
Physics-General
Physics-
Statement 1: Improper banking of roads causes wear and tear of tyres
Statement 2: The necessary centripetal force in that event is provided by the force of friction between the tyres and the road
Statement 1: Improper banking of roads causes wear and tear of tyres
Statement 2: The necessary centripetal force in that event is provided by the force of friction between the tyres and the road
Physics-General
Physics-
Statement 1: A safe turn by a cyclist should neither be fast nor sharp
Statement 2: As the bending of angle from the vertical would decrease
Statement 1: A safe turn by a cyclist should neither be fast nor sharp
Statement 2: As the bending of angle from the vertical would decrease
Physics-General
Physics-
Statement 1: If both the speed of a body and radius of its circular path are doubled, then centripetal force also gets doubled
Statement 2: Centripetal force is directly proportional to both speed of a body and radius of circular path
Statement 1: If both the speed of a body and radius of its circular path are doubled, then centripetal force also gets doubled
Statement 2: Centripetal force is directly proportional to both speed of a body and radius of circular path
Physics-General
Physics-
Statement 1: A football whether kicked at 
or 
will strike the ground at the same place, although when kicked at , it will remain longer in the air
Statement 2: Air resistance is more for larger angle
Statement 1: A football whether kicked at or will strike the ground at the same place, although when kicked at , it will remain longer in the air
Statement 2: Air resistance is more for larger angle
Physics-General
Physics-
Statement 1: The resultant of three vectors 
and 
and 
as shown in figure is 
. 
is the radius of circle
Statement 2: 
is along and ()
is along .
Statement 1: The resultant of three vectors and and as shown in figure is . is the radius of circle
Statement 2: is along and () is along .
Physics-General
Physics-
Statement 1: When the velocity of projection of a body is made 
time, its time of flight becomes times
Statement 2: Range of projectile does not depend on the initial velocity of body
Statement 1: When the velocity of projection of a body is made time, its time of flight becomes times
Statement 2: Range of projectile does not depend on the initial velocity of body
Physics-General
Physics-
Statement 1: At the highest point of projectile motion given angular projection, the velocity is not zero
Statement 2: Only the vertical component of velocity is zero whereas horizontal component still exists
Statement 1: At the highest point of projectile motion given angular projection, the velocity is not zero
Statement 2: Only the vertical component of velocity is zero whereas horizontal component still exists
Physics-General
Physics-
Statement 1: The maximum horizontal range of projectile is proportional to square of velocity
Statement 2: The maximum horizontal range of projectile is equal to maximum height attained by projectile
Statement 1: The maximum horizontal range of projectile is proportional to square of velocity
Statement 2: The maximum horizontal range of projectile is equal to maximum height attained by projectile
Physics-General
Physics-
Statement 1: When range of a projectile is maximum, its angle of projection may be 
or 
Statement 2: Whether 
is or , value of range remains the same, only the sign changes
Statement 1: When range of a projectile is maximum, its angle of projection may be or
Statement 2: Whether is or , value of range remains the same, only the sign changes
Physics-General
Physics-
Statement 1: As the frictional force increases, the safe velocity limit for taking a turn on an unbanked road also increases
Statement 2: Banking of roads will increases the value of limiting velocity
Statement 1: As the frictional force increases, the safe velocity limit for taking a turn on an unbanked road also increases
Statement 2: Banking of roads will increases the value of limiting velocity
Physics-General
Physics-
Statement 1: For looping a vertical loop of radius 
, the minimum velocity at the lowest point should be 
Statement 2: In that event, velocity at the highest point would be zero
Statement 1: For looping a vertical loop of radius , the minimum velocity at the lowest point should be
Statement 2: In that event, velocity at the highest point would be zero
Physics-General
Physics-
Statement 1: A coin is placed on phonogram turn table. The motor is started, coin moves along the moving table
Statement 2: The rotating table is providing necessary centripetal force to the coin
Statement 1: A coin is placed on phonogram turn table. The motor is started, coin moves along the moving table
Statement 2: The rotating table is providing necessary centripetal force to the coin
Physics-General
Physics-
Statement 1: A safe turn by a cyclist should neither be fast nor sharp
Statement 2: The bending angle from the vertical would decrease with increase in velocity
Statement 1: A safe turn by a cyclist should neither be fast nor sharp
Statement 2: The bending angle from the vertical would decrease with increase in velocity
Physics-General
Physics-
Statement 1: When a body is dropped or thrown horizontally from the same height, it would reach the ground at the same time
Statement 2: Horizontal velocity has no effect on the vertical direction
Statement 1: When a body is dropped or thrown horizontally from the same height, it would reach the ground at the same time
Statement 2: Horizontal velocity has no effect on the vertical direction
Physics-General
