Answer:
2.5 cm
Explanation:
Using the relation :
Refractive index = Real Depth / Apparent depth
Refractive index = 1.6
Real depth = 4cm
Virtual depth = apparent depth = x
1.6 = 4cm / x
1.6x = 4
x = 4 / 1.6
x = 2.5
Hence, virtual depth = 2.5cm
Very unlikely. This is not really a good question for Brainly.
Answer:
29.4 J
Explanation:
gravitational potential energy =mgh
Where m is the mass h is the height about ground
and g the acceleration due to gravity
g=9.8ms−2
Hence 2⋅1.5⋅9.8
=29.4 J
Use the value of g you have been taught to use, some people advise using 9.8 or 9.81 but some use 10