Question

06. Define: i) Resultant vector it) Equal vector.
0.7. State and prove associative law for vector addition
0.8. The angular momentum T =TXP where is a position vector and P is linier momentum of
a body. Ili 41 61 - 3k and f 21+ 41-Sk. lindi
0.9. Discuss effect of humidity on speed of sound.
0.10. State any two characteristics of longitudinal waves.
0.11. A tuning fork of frequency 170 11. Produces sound waves of wavelength 2 m. calculate speed
of sound.
0.12. Define absolute refractive index and relative refractive index
Q.13. Explain total internal reflection with neat diagram
SECTION
Attempt any FOUR.
[12]
Q.14. Define absolute error, mean absolute error, relative error and percentage error.
0.15. The distance travelled by an object in time (1001) sis (5.2 -0.1) m. what is the speed and it's
error?
Q.16. State any three characteristics of scalar product.
0.17. ICA - 51 +61 +4k and B 21-2+ 3k. determine the angle between A and B.
Q.18. Explain Newtons forinulae for velocity of sound. What is its limitation
Q.19. The pocket microscope used by a student consists of eye lens of focal length 6.25 cm and
objective of focal length 2cm, at microscope length 15 cm the final image appears biggest.
Estimate distance of the object from the objective and magnifying power of the microscope
SECTION-D
Attempt any TWO
[08]
0.20. State and explain vector product of two vectors Determine the vector product of vi = 21 - 37 -
and v2 --21 - 3k
0.21. Define Dimensions of a physical quantity. Write dimensions of work and force. Check whether
the equation = utat is dimensionally correct.
0.22. State any two medical applications of acoustics. A man shouts loudly close to a high wall.
He hears an echo. If the man is at 40m from the wall. how long after the shout will the echo be
heard? (Speed of sound in air = 330 m/s)
0.23. For the prism prove the relation i+e= A +8 where the symbols have their usual meanings.give answer fast​

Answer 1

Answer:

Equal Vectors : Two vectors of equal magnitude, in same direction are called equal vectors.

resultant vector is the combination of two or more single vectors. When used alone, the term vector refers to a graphical representation of the magnitude and direction of a physical entity like force, velocity, or acceleration.

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Answer 2

resultant vector is the combination of two or more single vectors. When used alone, the term vector refers to a graphical representation of the magnitude and direction of a physical entity like force, velocity.