Safe limit of radiation exposure in one year is.
Safe limit of radiation exposure in one year is:
3 rem | |
5 rem | |
4 rem | |
6 rem |
Physics MCQS
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In vacuum all electromagnetic waves have the same.
In vacuum all electromagnetic waves have the same:
Amplitude | |
Wavelength | |
Frequency | |
Speed |
In computer terminology information means.
In computer terminology information means:
Processed data | |
Any data | |
Large data | |
Raw data |
From which of the following you can get information almost about everything.
From which of the following you can get information almost about everything:
Teacher | |
Book | |
Computer | |
Internet |
Five joules of work is needed to shift 10 C of charge from one place to another. The potential difference between the places is.
Five joules of work is needed to shift 10 C of charge from one place to another. The potential difference between the places is:
10V | |
2V | |
0.5 V | |
5 V |
Capacitance is defined as.
Capacitance is defined as:
QV | |
| |
VC | |
|
Capacitance is defined as.
Capacitance is defined as:
VC | |
QV | |
| |
|
In series combination of capacitors, each capacitor will have same
In series combination of capacitors, each capacitor will have same
Charge | |
Capacitance | |
Charge and voltage | |
Voltage |
One of isotope of Uranium is 23892U . The number of neutrons in this isotope is
One of isotope of Uranium is 23892U . The number of neutrons in this isotope is
92 | |
146 | |
238 | |
330 |
The characteristic of sound by which we can distinguish between two sounds of same loudness and pitch is called
The characteristic of sound by which we can distinguish between two sounds of same loudness and pitch is called
Intensity | |
Pitch | |
Loudness | |
Quality |
The focal length (f) is related to radius of curvature (R) as
The focal length (f) is related to radius of curvature (R) as
fR= 2 | |
f= 2R | |
| |
|
A lamp connected to a 12V source, when it carries 2.5A current, power will be
A lamp connected to a 12V source, when it carries 2.5A current, power will be
14.5W | |
30W | |
4.8W | |
60W |
Example of mechanical waves is
Example of mechanical waves is
Radio waves | |
X-Rays | |
Light waves | |
Sound waves |
If X= A. B, then X is ‘1’ when
If X= A. B, then X is ‘1’ when
A = 1, B = 1 | |
A = 1, B = 0 | |
A = 0, B = 0 | |
A = 0, B = 1 |
If the mass of the bob of a pendulum is increased by a factor of 3, the period of pendulum’s motion will
If the mass of the bob of a pendulum is increased by a factor of 3, the period of pendulum’s motion will
Be decreased by a factor of 4 | |
Be decreased by factor of 2 | |
Remain the same | |
Be increased by factor of 2 |
Example of primary memory is
Example of primary memory is
Audio cassette | |
Floppy disk | |
Hard disk | |
Read only memory (ROM) |
Electroscope is used to detect
Electroscope is used to detect
Voltage | |
Pressure | |
Charge | |
Temperature |
Term “e-mail” stands for
Term “e-mail” stands for
Extra mail | |
External mail | |
Electronic mail | |
Emergency mail |
The step down transformer
The step down transformer
Has less turns in primary coil | |
Decreases the input voltage | |
Decreases the input current | |
Has more turns in secondary coil |
In computer terminology, information means.
In computer terminology, information means:
Raw data | |
Any data | |
Processed data | |
Large data |