Physics Test 19

Result

Physics Test 19

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Weekly Quiz Competition

Question 1
4 / -1

A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about scale reading is

A
both the scales read M kg each

B
the scale of the lower one reads M kg and of upper one zero

C
the reading of the two scales can be anything but sum of the reading will be M kg

D
both the scales read M/2 kg.

Solution

Both the scales read M kg each.
Question 2
4 / -1

The magnetic lines of force inside a bar magnet

A
are from north-pole to south-pole of the magnet

B
do not exist

C
depend upon the area of cross-section of the bar magnet

D
are from south-pole to north-pole of the magnet.

Solution

The magnetic lines of force inside a bar magnet are from south pole to north pole of the magnet.
Question 3
4 / -1

A parachute falls from an airplane moving with uniform horizontal velocity V. At the moment he just touches the ground-

A
he would be just below the aeroplane at that moment

B
he would be left behind the plane

C
he would go ahead of the plane

D
nothing could be said with certainty

Solution

As the only horizontal direction movement is governed by the motion of the airplane which is having a constant horizontal speed and therefore the parachute would be just below the airplane at that moment.