Welcome Guest | Sign in | Register

Home > General Knowledge > Physics > Questions and Answers

Exercise:

Section 1

► Section 2

01. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
A. the heating effect of current alone B. hysteresis loss alone
C. both the heating effect of current and hysteresis loss D. intense sunlight at noon

Answer and Explanation

Answer: both the heating effect of current and hysteresis loss

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
02. oil raise up the wick in a lamp. The principle involves
A. the diffusion of oil through the wick B. the liquid state of oil
C. capillary action phenomenon D. volatility of oil

Answer and Explanation

Answer: capillary action phenomenon

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
03. Light travels at the fastest speed in
A. glass B. water
C. hydrogen D. vacuum

Answer and Explanation

Answer: vacuum

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
04. Light year is a unit of
A. time B. distance
C. light D. intensity of light

Answer and Explanation

Answer: distance

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
05. Nuclear sizes are expressed in a unit named
A. Fermi B. angstrom
C. newton D. tesla

Answer and Explanation

Answer: Fermi

Explanation:
Fermi - A unit of length equal to 10-15 meter (one femtometer), used in nuclear physics. It is similar to the diameter of a proton.

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
06. Stars appears to move from east to west because:
A. All stars move from east to west. B. The Earth rotates from west to east.
C. The Earth rotates from east to west. D. None of these

Answer and Explanation

Answer: The Earth rotates from west to east.

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
07. Pick out the scalar quantity
A. force B. pressure
C. velocity D. acceleration

Answer and Explanation

Answer: pressure

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
08. Pa(Pascal) is the unit for
A. thrust B. pressure
C. frequency D. conductivity

Answer and Explanation

Answer: pressure

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
09. Intensity of sound at a point is ____ its distance from the source.
A. directly proportional to B. inversely proportional to
C. directly proportional to square of D. inversely proportional to square of

Answer and Explanation

Answer: inversely proportional to square of

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
10. Magnetism at the centre of a bar magnet is
A. minimum B. maximum
C. zero D. minimum or maximum

Answer and Explanation

Answer: zero

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
11. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?
A. Water, iron and air B. Iron, air and water
C. Air, water and iron D. Iron, water and air

Answer and Explanation

Answer: Air, water and iron

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
12. Sound waves in air are:
A. Transverse B. Longitudinal
C. Electromagnetic D. Polarised

Answer and Explanation

Answer: Longitudinal

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
13. Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
A. move towards A B. move towards B
C. move at right angles to the line joining A and B D. remain at rest

Answer and Explanation

Answer: move towards B

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum
14. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
A. Rainbow B. Earthshine
C. Halo D. Mirage

Answer and Explanation

Answer: Mirage

Explanation:
There is no explanation...

Report Errors

Name:

Loading...

VView Answer | RReport | DDiscuss in Forum



LucentBlackBoard.com has the web's largest collection of over 15,000 aptitude questions and answers with detailed explanation which include subjects like Arithmetic Aptitude, Logical Reasoning, Verbal Ability, General Knowledge, Programming Skills and more!

Our online education portal provides a unique and standard learning experience for students. We enable the students to prepare for most of the entrance and competitive exams like MBA (MAT, GMAT), Engineering (IIT-JEE, AIEEE, GATE), Employment (IAS, Bank PO, Railway, UGCNET), Civil Services and many more. We bring you the best in education by providing technical excellence and creating innovative solutions. We provide facility for online test preparation that offers 24/7 access to relevant subject matter and relative tests. These test preparations help the students to groom themselves and get prepared before actually facing the examination.

Partner Sites
LucentBlackBoard.com                  SoftLucent.com                  LucentJobs.com
About Us
Contact Us
Terms of Use
Privacy Policy
Institute Login
All rights reserved © 2012-2015 SoftLucent.