Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Why doesn’t Archimedes’ principle hold for a vessel under a free fall?
The effective value of g increases.
The effective a value of a decreases.
The body immerse in the vessel will become weightless
The density of air increases
A black of weight w floats in a lake. If the apparent weight of the floating block is W1, which one of the following is correct?
W1 > W
W1
W1 = W
W1 = 0
The specific gravity of a substance is measured by a hydrometer at the sea level. If the measurement is done at the top of a mountain, when would be the specific gravity?
Zero
More than that measured at the sea level
Less than that measured at the sea level
Same as that measured at the sea level
Consider the following statement:
If there were no capillarity.
It would be impossible to use a kerosene lamp.
One would not be able to use a straw to consume a soft drink.
The blotting paper would fail to function.
There would have been no plants on the earth.
A sold cube of iron (specific gravity = 8) is melted into sheets, The side of the cube is I’m. The sheets are used to make ad hollow cube. This cube float such that it’s whole volume inside water. What should be the minimum length of side of such a cube?
20m
2.5m
2.75m
3.0m
