NCERT Class 11 Physics Short Questions & Answers

NCERT NCERT Class 11 Physics Short Questions & Answers NCERT Class 11 Physics QUESTIONS

NCERT Class 11 Physics Short Questions & Answers

1 In parallel combination of n cells, we obtain
A more voltage
B more current
C less voltage
D less current

Answer: more current
2 Combine three resistors 5 Q, 4.5 Q and 3 Q in such a way that the total resistance of this combination is maximum
A 12.5 Q
B 13.5 Q
C 14.5 Q
D 16.5 Q

Answer: 12.5 Q
3 An electron is projected along the axis of a circular conductor carrying the same current. Electron will experience
A a force along the axis
B a force perpendicular to the axis.
C a force at an angle of 4° with axis.
D no force experienced.

Answer: no force experienced.
4 A conservative force is dependent only on :
A Position of the objects
B Position of the forces
C Position of the path taken
D None of the above

Answer: Position of the objects
5 The gyro-magnetic ratio of an electron in an H-atom, according to Bohr model, is
A independent of which orbit it is in.
B neutral
C positive
D increases with the quantum number n.

Answer: independent of which orbit it is in.
6 A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field B, such that B is perpendicular to the plane of the loop. The magnetic force acting on the loop is
A irB.
B 2πriB
C zero
D πriB

Answer: zero
7 In the series combination of two or more than two resistances
A the voltage through each resistance is same.
B the current through each resistance is same.
C neither current nor voltage through each re-sistance is same.
D both current and voltage through each resis¬tance are same.

Answer: the current through each resistance is same.
8 An electric heater is connected to the voltage supply. After few seconds, current gets its steady value then its initial current will be
A slightly higher than its steady current
B slightly less than its steady current
C equal to its steady current
D zero

Answer: slightly higher than its steady current
9 If any external conservative force also is applied on the distributed loading then?
A The net force will act at the centroid of the structure only
B The net load will not be formed as all the forces will be canceled
C The net force will act on the base of the loading horizontally
D The net force will not be considered, there would be a net force of the distribution, rest will be the external forces

Answer: The net force will not be considered, there would be a net force of the distribution, rest will be the external forces
10 For measurement of potential difference, a potentiometer is preferred over voltmeter because
A potentiometer does not take current from the circuit.
B potentiometer is cheaper than voltmeter.
C the resistance of potentiometer is less than voltmeter.
D potentiometer is more sensitive than voltmeter.

Answer: potentiometer does not take current from the circuit.

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