Answer:
30 cm
Explanation:
f = Focal length = 25 cm
R = Radius of curvature (both sides are equal)
= Refractive index of lens = 1.6
The lens maker formula is given by
minus sign because it is on the other side

The radius of curvature of the glass surface is 30 cm
Answer:
No, it is not d true light
Explanation:
fruits generally plants need a direct sunlight
Answer:
<h2>45 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 15 × 3
We have the final answer as
<h3>45 N</h3>
Hope this helps you
in the case of beryllium, a light metal, only the beryllium-9 isotope is stable with its 9 nucleons (i.e. 4 protons and 5 neutrons)
Hope this helps so sorry if it does not help
Answer:
Spring constant, k = 283.33 N/m
Explanation:
Given that,
Force acting on the spring, F = 8.5 N
Stretching in the spring, x = 3 cm = 0.03 m
Let k is the spring constant of the spring. It can be calculated using Hooke's law as :



k = 283.33 N/m
So, the spring constant of the spring is 283.33 N/m. Hence, this is the required solution.