Sawaal

 Physics Questions

Popular Latest Rated
Q:

The coil wire in the electric room heater or electric cooking heater is called __________.

A) Circuit B) Element
C) Filament D) Cells
 
Answer & Explanation Answer: B) Element

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 1465
Q:

Which  one  of  the following  is  the  value  of one nanometer?

A) 10-7 cm B) 10-6 cm
C) 10-4  cm D) 10-3  cm
 
Answer & Explanation Answer: A) 10-7 cm

Explanation:

1 nanometer (nm) of length

Equals: 0.00000010 centimetres (cm) in length.

This is equal to 10^-7 cm.

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1464
Q:

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

A) -4.33 diopters B) 12.33 diopters
C) -12.33 diopters D) 4.33 diopters
 
Answer & Explanation Answer: B) 12.33 diopters

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

2 1464
Q:

Air expands when it _______________.

A) is cooled B) is heated
C) is under pressure D) becomes more humid
 
Answer & Explanation Answer: B) is heated

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1463
Q:

_________________ is a measure of the moisture in air.

A) Density B) Viscosity
C) Impurity D) Humidity
 
Answer & Explanation Answer: D) Humidity

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

2 1458
Q:

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

 

 

 

A) 6.25 x 1018 C B) 1.6 x 10-19 C
C) 1.6 x 1019 C D) 0.625 x 1017 C
 
Answer & Explanation Answer: A) 6.25 x 1018 C

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 1458
Q:

The attenuation in optical fibre is mainly due to

A) Scattering B) Absorption
C) Both (a) and (b) D) Neither absorption nor scattering
 
Answer & Explanation Answer: A) Scattering

Explanation:

The reason for transmitting data over optical fibers, is because the speed of data transmission through optical wires are equal to the speed of light. The intense speed of data transfer speed, has lead to the use of optical fibers. The optical fiber uses the technology of transferring light beams, from one end to the other end of optical cables. The attenuation in optical fiber is due to Scattering. The reason why scattering is caused, due to the folding, in the wire.

 

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams , CAT

0 1456
Q:

________________ refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition.

A) Interference B) Rectification
C) Intensity D) Diffraction
 
Answer & Explanation Answer: A) Interference

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

2 1449