The amount of force needed to accelerate a 10 kg mass at 2.5 m/s2 is:
25N
The correct answer is Option 1 i.e. 25N.
To find the force needed to accelerate a mass, we use Newton's Second Law of Motion:
F = ma
Where:
F is the force,
m is the mass,
a is the acceleration
Given:
m=10 kg
a=2.5 m/s2
Substituting the values:
F= 10kg × 2.5m/s2 = 25N
So, the force required is 25 Newtons (N).
An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image is formed at a distance of:
When white light is dispersed by a glass prism into seven colours, out of the following colours which colour will be deviated the least?
When white light falls on a glass prism, it splits into seven colours. The phenomena is known as:
The magnification produced by a spherical mirror is +0.75. The image is:
The centre of the reflecting surface of a spherical mirror is a point called the _______.
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
The power of a lens is -2.5 D. The type of lens and its focal length are respectively: