A prism will separate white light into a rainbow of light
Answer:
Displacement method of volume measurement is no suitable
Explanation:
Displacement method of volume measurement is no suitable for the objects that do not get immersed into the water completely because of the hindrance in accuracy of the measurement.
This makes frequency lower as well as the pitch we hear.
Answer:
Explanation:
v = 50 km / h
= 13.89 m /s
When a vehicle runs on a circular path , it is static friction which prevents it from getting overturned .
static friction = μs mg
centripetal force = m v² / R
m v² / R = μs mg
R = v² / μs x g
= 13.89² / .7 x 9.8
= 28.12 m .
Answer:
D. 550 Hz
Explanation:
Frequency for string is given by

where v is the speed of the wave, L = m is the length
Frequency is inversely proportional to the Length of the string

from above relation we can write

The newly shortened string has 4/5 the length of the full string .i,e

Hence option D is correct