WorksheetsAssignmet Test 1
Total questions: 17
Worksheet time: 56mins
Which method of producing ultrasonic waves involves the use of a transistor circuit?
Piezoelectric method
Magnetostriction method
Both
None of the above
What property of ultrasonic waves enables their use in medical imaging?
High frequency
Long wavelength
Low velocity
Low amplitude
In architectural acoustics, how does an increase in the surface area of hard, reflective materials affect the reverberation time of a room?
Decreases the reverberation time
Increases the reverberation time
No effect on the reverberation time
Decreases the absorption coefficient
What is one of the basic requirements for an acoustically good hall?
High reverberation time
Low absorption coefficient
Limited factors affecting architectural acoustics
None of the above
Which property of electromagnetic waves explains the phenomenon of light bending around obstacles?
Interference
Diffraction
Double refraction
Polarization
Which type of electromagnetic waves are commonly used in radar systems?
Microwaves
Infrared rays
Ultraviolet rays
X-rays
In which application are X-rays primarily utilized?
Medical imaging
Wireless communication
Food processing
Infrared heating
Sabine’s formula is used to calculate the (a) of a room.
(a) is the method of producing ultrasonic waves that involves the generation of stress within a material in a magnetic field.
(a) is the property of electromagnetic waves that allows them to undergo constructive or destructive interference.
(a) is the property of electromagnetic waves that allows them to vibrate in a single plane.
Recently NASA launched James Webb telescope which uses (a) types of electromagnetic radiations.
write any common application of ultrasonic waves contribute to medical diagnostics and treatments?
How does increasing the absorption coefficient of materials in a room affect its reverberation time?
What are some of the primary applications of gamma rays in the field of medicine.
Define diffraction grating.
For Q. 16 - Q. 20 In each of the following questions, two statements numbered I and II are given. There may be cause and effect relationship between the two statements. These two statements may be the effect of the same cause or independent causes. These statements may be independent causes without having any relationship. Read both the statements in each question and mark your answer as
(A) If statement I is the cause and statement II is its effect;
(B) If statement II is the cause and statement I is its effect;
(C) If both the statements I and II are independent causes;
(D) If both the statements I and II are effects of independent causes; and
(E) If both the statements I and II are effects of some common cause.
Statement I: The surface area of reflective materials in a room is increased.
Statement II: The reverberation time of the room is prolonged.
If statement I is the cause and statement II is its effect
If statement II is the cause and statement I is its effect;
If both the statements I and II are independent causes;
If both the statements I and II are effects of independent causes;
If both the statements I and II are effects of some common cause.
Statement I: The room dimensions are enlarged.
Statement II: The reverberation time of the room is reduced
statement I is the cause and statement II is its effect
statement II is the cause and statement I is its effect
both the statements I and II are independent causes
both the statements I and II are effects of independent causes
both the statements I and II are effects of some common cause
Statement I: The polarization of light passing through a polarizer is altered.
Statement II: The intensity of light reaching a detector decreases.
If statement I is the cause and statement II is its effect;
If statement II is the cause and statement I is its effect
If both the statements I and II are independent causes
If both the statements I and II are effects of independent causes
If both the statements I and II are effects of some common cause
Statement I: Microwave radiation is emitted towards food in a microwave oven.
Statement II: The temperature of the food increases.
If statement I is the cause and statement II is its effect
If statement II is the cause and statement I is its effect;
If both the statements I and II are independent causes
If both the statements I and II are effects of independent causes
If both the statements I and II are effects of some common cause
