Correct Answer:- Option-B
Question19:-A conductor is placed in an external electric field ` ५९८६.

[ ५९८६

8:-2 ४९८६

C:-Zero

0:- (vecE)/(2)*

Correct Answer:- Option-C
Question20:-Which among the following is not a SI base quantity

A:-Luminous intensity

B:-Time

C:-Temperature

D:-Electric Potential

Correct Answer:- Option-D
Question21:-Resistivity of copper depends on

A:-Temperature

B:-Length

C:-Area of cross section

D:-None of the above

Correct Answer:- Option-A
Question22:-Weakest force in nature is

A:-Electromagnetic force

B:-Strong nuclear force

C:-Gravitational force

D:-Weak nuclear force

Correct Answer:- Option-C

, ` The electric field inside a cavity in the conductor is

Question23:-Two parallel conductors are carrying current in the same direction. The force between them is

A:-Repulsive

B:-attractive

C:-Zero

D:-Cannot Predict

Correct Answer:- Option-B
Question24:-The unit of the physical quantity *(1)/(sqrt(mu_(0))epsi_

A:-m/'s*2*

B:-m/s

C:-Newton

D:-kg m/s

Correct Answer:- Option-B

(0) is

Question25:-The angle between the true geographic north and the north shown by a compass needle is called

A:-Dip

B:-Inclination

C:-Meridian

D:-Declination

Correct Answer:- Option-D
Question26:-Resonant frequency in LCR series circuit is

A: (1)/(2pisqrt(LC))°

8:-2 Pisqrt((1)/(LC))*

C:-*(1)/(2Pi)sqrt((L)/(C))*

D:-2°Pisqrt((L)/(C))°

Correct Answer:- Option-A
Question27:-The chemical name of Bleaching powder is

A:-Calcium carbonate

B:-Calcium hypochlorite

C:-Calcium Phosphate

D:-Calcium Cyanide

Correct Answer:- Option-B
Question28:-Bell metal is an alloy of

A:-Fe and Cr

B:-Cu and Ni

C:-Cu and Sn