Magnifying glasses typically use a value of 0.25 meters, or 250 millimeters, distance. This means that that D is the correct answer and the image will be formed approximately D. 250 millimeters in front of the lens
The answer is the letter ( d )
Answer:
y = 27 cm
Explanation:
given,
After 11 hours of burning height of candle is 27.9 cm
After 30 hours of burning height of candle is 26 cm
height after 20 hour = ?
the candle height decreases linearly
using linear equation
y = m x+ c
27.9 = m (11 ) + C.......(1)
26 = m (30) + C..............(2)
on solving equation (1) and (2)
1.9 = -19 m
m = -0.1
from equation 2
26 = -3 + C
C = 29
y = m x + 29
at 20 hour
y = -0.1× 20 + 29
y = 27
height of candle after 20 hours is 27 cm.
Answer:
L = ¼ k g / m
Explanation:
This is an interesting exercise, in the first case the spring bounces under its own weight and in the second it oscillates under its own weight.
The first case angular velocity, spring mass system is
w₁² = k / m
The second case the angular velocity is
w₂² = L / g
They tell us
w₂ = ½ w₁
Let's replace and calculate
√ (L / g) = ½ √ (k / m)
L / g = ¼ k / m
L = ¼ k g / m
Answer:
The time rate of change of flux is 
Explanation:
Given :
Current 
A
Area of plate 
Plate separation 
m
(A)
First find the capacitance of capacitor,
Where 
F
But 
Where 
Now differentiate above equation wrt. time,
Therefore, the time rate of change of flux is
