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
Physics General Science Test Medium Mode MCQs With Answers
Question # 1
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Choose an answer
9.4 kHz
940 kHz
94 kHz
None of these
Previous
Skip
Next
Question # 2
A process is a reversible process, if the entropy of the system
Choose an answer
increases
decreases
remains constant
none of them
Previous
Skip
Next
Question # 3
Fraction of the decaying atoms per unit time is called
Choose an answer
decay atom
decay element
decay constant
decay
Previous
Skip
Next
Question # 4
Work done by the force of friction is always
Choose an answer
Positive
Zero
Negative
Maximum
Previous
Skip
Next
Question # 5
A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then
Choose an answer
The charge in the plates reduces and potential difference increase
Potential difference between the plates increase, stored energy decreases and charge remains the same
Potential difference between the plates decreases and charge remains unchanged
None of the above
Previous
Skip
Next
Question # 6
The ratio of the gravitational force F
g
to the electrostatic force F
e
between two electrons at the same distance apart is approximately
Choose an answer
9.8
24 x 10
19
24 x 10
42
24 x 10
-44
Previous
Skip
Next
Question # 7
The current sensitivity of the galvanometer is
Choose an answer
C/BAN
BAN/C
CAN/B
CBN/A
Previous
Skip
Next
Question # 8
Acceleration of a body is negative if the velocity of the body is
Choose an answer
constant
increasing
decreasing
none of them
Previous
Skip
Next
Question # 9
Melting point of ice
Choose an answer
Increases with increasing pressure
Decreases with increasing pressure
Is independent of pressure
Is proportional to pressure
Previous
Skip
Next
Question # 10
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Choose an answer
Greater than
Less than
Equal to
None of these
Previous
Skip
Next
Question # 11
Centripetal force performs:
Choose an answer
Maximum work
Negative work
Positive work
None of these
Previous
Skip
Next
Question # 12
Two different gases are enclosed in two different vessels at same pressure. If r
1
and r
2
are their densities then ration of their rms speed is equal to
Choose an answer
Previous
Skip
Next
Question # 13
Two resistances 4Ω and 6Ω are in series they are in parallel with a 10Ω resistance.The equivalent resistance is
Choose an answer
5Ω
8Ω
12Ω
20Ω
Previous
Skip
Next
Question # 14
A particle moves along a circular path under the action of a force.The work done by the force is
Choose an answer
Zero
Positive and non zero
Negative and non zero
None of above
Previous
Skip
Next
Question # 15
J.J Thomson finds:
Choose an answer
Particle nature of the electron
Dual nature of electron
Wave nature of electron
Electromagnetic nature of electron
Previous
Skip
Next
Question # 16
The expression for the terminal velocity V
t
is given by
Choose an answer
V
t
= mg/36πη
V
t
= mg/6πηr
V
t
= mg/6πηa
V
t
= mg/6π
2
ηr
Previous
Skip
Next
Question # 17
Near and far points of a healthy human eye respectively are
Choose an answer
0 and 25 cm
0 and infinity
25 cm and 100 cm
25 cm and infinity
Previous
Skip
Next
Question # 18
Acceptor impurities donate
Choose an answer
Holes
Electrons
Both Electrons and Holes
None of them
Previous
Skip
Next
Question # 19
Graham Bell photo phone used a modulated beam of
Choose an answer
Reflected sun light
Refracted sun light
Diffracted sun light
None of these
Previous
Skip
Next
Question # 20
When resistances are connected in Parallel, the effective resistance will be
Choose an answer
Product of the reciprocals of the individual resistances
Product of the individual resistances
Sum of the reciprocals of the individual resistances
Sum of the individual resistances
Previous
Skip
Next
Question # 21
Electric potential of earth is taken to be because earth is a good
Choose an answer
insulator
Conductor
Semi-conductor
Dielectric
Previous
Skip
Next
Question # 22
If unit of length mass and time each be doubled the unit of work done is increased by
Choose an answer
4 times
6 times
8 times
2 times
Previous
Skip
Next
Back