More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
NAT I Engineering Physics MCQs With Answers
Question # 1
When sound waves travel from air to water which of these remains constant?
Choose an answer
Velocity
Frequency
Wavelength
All the above
Previous
Skip
Next
Question # 2
If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by monochromatic blue light of the same intensity
Choose an answer
Fringe width will decrease
Fringe width will increase
The fringe width will remain unchanged
Fringes will become less intense
Previous
Skip
Next
Question # 3
There are discrete energy levels in atoms. It was first experimentally demonstrated by
Choose an answer
Rutherford's experiment
Frank Hertz experiment
Marsden's experiment
Sommerfield experiment
Previous
Skip
Next
Question # 4
A photoelectric cell converts
Choose an answer
Electrical energy to light energy
Light energy to light energy
Light energy to electrical energy
Light energy to elastic energy
Previous
Skip
Next
Question # 5
Planck's constant has the dimensions of:
Choose an answer
Energy
Momentum
Frequency
Angular momentum
Previous
Skip
Next
Question # 6
The frequency of the incident light falling on a photosensitive metal plate is doubled the kinetic energy of the emitted photoelectrons is
Choose an answer
Double the earlier value
Unchanged
More than doubled
Less than doubled
Previous
Skip
Next
Question # 7
Which one of the following is a simple harmonic motion?
Choose an answer
Wave moving through a string fixed at both ends.
Earth spinning about its own axis
Ball bouncing between two rigid vertical walls
Particle moving in a circle with uniform speed.
Previous
Skip
Next
Question # 8
According to the Hooke's law the force required to change the length of a wire by '1' is proportional to
Choose an answer
1
-2
1
-1
1
1
2
Previous
Skip
Next
Question # 9
The conductivity of a superconductor is
Choose an answer
Infinite
Very large
Very small
Zero
Previous
Skip
Next
Question # 10
Energy is stored in the choke coil in the form of
Choose an answer
Heat
Magnetic energy
Electric energy
Electro -magnetic energy
Previous
Skip
Next
Question # 11
In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion
Choose an answer
KE remains constant
PE remains constant
KE/PE is constant
KE + PE remains constant
Previous
Skip
Next
Back