Sawaal

 Physics Questions

Popular Latest Rated
Q:

What is the resistance (in ohm) of an electrical component if a current of 0.1 A passes through it on application of 5 V of potential difference across it?

A) 0.5 B) 100
C) 50 D) 1
 
Answer & Explanation Answer: C) 50

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1550
Q:

The magnitude of buoyant force depends on the .......... of the fluid.

A) mass B) temperature
C) volume D) density
 
Answer & Explanation Answer: D) density

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , GATE

1 1545
Q:

For which one of the following does the centre of mass lie outside the body?

A) A fountain pen B) A cricket ball
C) A ring D) A book
 
Answer & Explanation Answer: C) A ring

Explanation:

For balancing the weight of ring, you need to put your finger or any solid object inside the ring so that you will be able to sustain their own weight because they are not able to sustain their own weight.so its centre of mass lies outside the body.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1545
Q:

Transformer is a device to convert

A) D.C. to A.C. B) Low voltage D.C. into high voltage D.C.
C) Low voltage A.C. into high voltage A.C. D) Mechanical energy into Electrical energy
 
Answer & Explanation Answer: A) D.C. to A.C.

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 1543
Q:

For a certain reaction,DGq = -45 kJ/mol and DHq= -90 kJ/mol at 0°C. What is the minimum temperature at which the reaction will become spontaneous, ifDHq and DSq are independent of temperature?

A) 273 K B) 298 K
C) 546 K D) 596 K
 
Answer & Explanation Answer: C) 546 K

Explanation:

T = 273 °K

Using the formula,

DGq = DHq –TDS

-45 = -90 –273 DS

DS = 0.164

Now since DHq and DSq are independent,T2= DH/DS = 45/0.164 = 273°K

Required Temp = 273 + 273 = 546°K

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1541
Q:

Centrifugal force increases with

A) Temperature B) Pressure
C) Acceleration D) Humidity
 
Answer & Explanation Answer: C) Acceleration

Explanation:

Centrifugal force is the fictitious force that pulls out from the center on the body we feel while moving in the circular path. It increases with the rate of rotation of the axis i.e, acceleration of the body.

 

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 1538
Q:

Rate at which velocity changes over time?

A) Speed B) Displacement
C) Acceleration D) Jerk
 
Answer & Explanation Answer: C) Acceleration

Explanation:

Acceleration is nothing but the rate at which velocity changes over time.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

7 1538
Q:

If the mass of an object is 60 kgs, what will be its weight on the moon? (N=Newton)

A) 60N B) 600N
C) 100N D) 10N
 
Answer & Explanation Answer: C) 100N

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

4 1536