Physics Quiz 1
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Question 1 |
Which of the following systems of units is not based on units of mass, length and time alone?
A | SI |
B | MKS |
C | FPS |
D | CGS |
Question 2 |
Mass is the measure of
A | matter contained |
B | weight |
C | force |
D | none of these |
Question 3 |
Among the following the derived quantity is
A | length |
B | mass |
C | density |
D | time |
Question 4 |
The working principle of a washing machine is :
A | centrifugation |
B | dialysis |
C | reverse osmosis |
D | diffusion |
Question 5 |
Newton’s laws of motion do not hold good for objects
A | at rest |
B | moving slowly |
C | moving with high velocity |
D | moving with velocity comparable to velocity of light |
Question 6 |
A jet engine works on the principle of conservation of
A | linear momentum |
B | angular momentum |
C | energy |
D | mass |
Question 7 |
Two objects of different masses falling freely near the surface of moon would
A | have same velocities at any instant |
B | have different accelerations |
C | experience forces of same magnitude |
D | undergo a change in their inertia |
Question 8 |
Which one among the following is the correct value of the gravitational force of the Earth acting on a body of mass 1 kg?
A | 8. 9 N |
B | 9. 8 N |
C | 89 N |
D | 98 N |
Question 9 |
A geostationary satellite
A | can move about any axis |
B | must move about the polar axis |
C | must move on an axis in the equatorial plane |
D | both (b) and (c) |
Question 10 |
In SONAR, we use
A | ultrasonic waves |
B | infrasonic waves |
C | radio waves |
D | audible sound waves |
Question 11 |
An oscilloscope is an instrument which allows us to see waves produced by
A | Visible light |
B | X-rays |
C | Sound |
D | Gamma rays |
Question 12 |
The sound travels fastest in
A | solids |
B | Gases |
C | Liquids |
D | none of These |
Question 13 |
Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?
A | Noise |
B | Beats |
C | Resonance |
D | Non-linear effects |
Question 14 |
The polarity of an unmarked horse shoe magnet can be determined by using
A | a charged glass rod |
B | a magnetic compass |
C | an electroscope |
D | another unmarked bar magnet |
Question 15 |
The earth’s magnetic field is approximately
A | 1 Tesla |
B | 2 Gauss |
C | 10ˆ4 Tesla |
D | 1 Gauss |
Question 16 |
An electric lamp of 100 watt is used for 10 hours per day. The ‘units’ of energy consumed in one day by the lamp is
A | 1 unit |
B | 0.1 unit |
C | 10 unit |
D | 100 unit |
Question 17 |
The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct?
A | 110 V is safer but more expensive to maintain |
B | 110 V is safer and cheaper to maintain |
C | 110 V leads to lower power loss |
D | 110 V works better at higher latitudes |
Question 18 |
Chadwick was awarded the 1935 nobel prize in physics for his discovery of the
A | electron |
B | proton |
C | neutron |
D | positron |
Question 19 |
The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as
A | Transmission |
B | Reception |
C | Modulation |
D | Detection |
Question 20 |
Electromagnetic radiations are emitted by which of the following?
A | Only by radio and television transmitting antennas |
B | Only by bodies at temperature higher than their
surroundings |
C | Only by red-hot bodies |
D | By all bodies |
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