A function f from set A to set B is a relation which associates each element x in A to ______ element B
Answers
Answer:
a fraction is such that the sum of its numerator and denominator is 15 if 8 is added to the numerator and 12 is added to the denominator the fraction becomes 3/4 find the original fractionadd the following 6x²y+5y²x² and -30yx²+5x²y²ANSWERS
1. C
2. A
3. C
4. A
5. A
6. B
7. C
8. A
9. c
10. D1. Eardrum is a part of
a. Sound producing organ
b. Skeletal system
c. Hearing organ
d. Reproductive organ
2. The hearing range of human ear is
a. 20 Hz to 20,000 Hz
b. Less than20 Hz
c. More than 20,000 Hz
d. 20 Hz to 25,000 Hz
3. The voice box is called:
a. Stomach
b. Heart
c. Larynx
d. Mouth
4. Large amplitude of sound vibrations will produce:
a. Loud sound
b. Meak sound
c. Slow sound
d. Shreak
5. The pitch of sound depends on
a. frequency
b. amplitude
c. both of these
d. none of these
6. Sound is kind of
a. Work
b. Energy
c. Force
d. None
7. To an fro motion of an object is called
a. Waves
b. Amplitude
c. Vibration
d. All of the above
8. Voice box or larynx of human process
a. Sound
b. Wind
c. Loudness
d. None
9. Sound propagates maximum in
a. Gas
b. Liquid
c. Solid
d. All
10. Noise pollution is harmful for
a. Human
b. Cat
c. Bird
d. All
ANSWERS
1. C
2. A
3. C
4. A
5. A
6. B
7. C
8. A
9. c
10. DDear students and Parents please note:-
1. Winter Holidays are from 25th December (Christmas) to -2nd Jan 2022.
2. Periodic 3 test will commence from 17th January 2022.
3. School timings from 3rd January will be from 9 am - 1:30 pm.
Warm regards