1.8 x 10-4m
1.5 x 10-4m
1.2 x 10-2m
1.8 x 10-3m
Correct answer is C
No explanation has been provided for this answer.
60
10
30
90
Correct answer is B
M = \(\frac{y}{x}\) = \(\frac{30}{3}\)
= 10
The instrument used to view stars is the
Prism binoculars
Telescope
Film projector
Microscope
Correct answer is B
No explanation has been provided for this answer.
Which of the following statements is correct about a machine?
Efficiency of a machine is always greater than I
Efficiency decreases with an increase in friction
Velocity ratio depends on friction
Mechanical advantage increases with an increase in friction
Correct answer is B
No explanation has been provided for this answer.
80cm
40cm
50cm
70cm
Correct answer is B
No explanation has been provided for this answer.