Physics One liner Question and Answers

Posted : 3 months ago

physics One liner Question and Answers


1.
Which instrument used for finding out wind-direction?

Answer and Explanation
Explanation :
wind vane

2.
Why is 'Beaufort Scale' used?

Answer and Explanation
Explanation :
To measure wind velocity

3.
What denotes the smallest temperature?

Answer and Explanation
Explanation :
1 ° on the Kelvin scale

4.
A temperature at which both the Fahrenheit and the centigrade scales have the same value?

Answer and Explanation
Explanation :
-40 °

5.
Angular separation between two colours of the spectrum depends upon which thing?

Answer and Explanation
Explanation :
Angle of deviation

6.
Total internal reflection of light is possible when light enters from which thing?

Answer and Explanation
Explanation :
Water to air

7.
What is a suitable unit for expressing electric field strength?

Answer and Explanation
Explanation :
N/C

8.
The unidirectional property of a pn-junction is useful for its use as which thing?

Answer and Explanation
Explanation :
Rectifier

9.
Thermal decomposition of alkanes is known as which name?

Answer and Explanation
Explanation :
Cracking

10.
Which energy of the electron at absolute zero is called?

Answer and Explanation
Explanation :
Fermi energy

11.
What is the wavelength of visible spectrum?

Answer and Explanation
Explanation :
3900-7600 A

12.
We cannot see during a fog. why?

Answer and Explanation
Explanation :
Because of scattering of light

13.
What is meant by 'Underwriting', the term frequently used in financial sector?

Answer and Explanation
Explanation :
Under valuation of the assets.

14.
What will be If a pendulum clock be taken from the earth to a revolving artificial satellite?

Answer and Explanation
Explanation :
It will stop altogether

15.
Which physical quantities have the same dimensions?

Answer and Explanation
Explanation :
Momentum and impulse