Question

bob IS Suspended in a lift and it reads 100N when lift is at rest
Ir the spring balance reading now changes to 80 N, then the elevator is moving
(1) upwards with increasing speed
(2) downwards with increasing speed
(3) downwards with decreasing speed
(4) downwards with constant speed
Consider the (v-t) graph of a body moving in a striaght line with uniform acceleratiom

Find displacement covered by body in last 2 seconds
(1) 20 m
(2) 12 m
(3) 22 m
(4) 16 m
Another name for the unit hertz is
(1) cycles per second (2) seconds per cycle (3) metres per second (4) decibels
If the volume of earth becomes eight times the present value with keeping its mass ca
value of gravitational acceleration at surface of earth will be
.
(1) 2
(2) 2g
Which of the following aranh is incorrect?​

Answer 1

Answer:

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