WorksheetsROUND 3-PHYSICS!
Total questions: 8
Worksheet time: 8mins
The speed of light will be minimum while passing through_______.
water
vaccum
glass
air
If 750µA is flowing through 11k ohm of resistance, what is the voltage drop across the resistor?
8.25V
82.5V
14.6V
146V
The working principle of a washing machine is _______.
reverse osmosis.
diffusion
centrifugation.
dialysis
A stone of mass 1kg is thrown with a velocity 20m/s across the frozen surface of a lake and comes to rest after travelling a distance of 50m.
What is the force of friction between stone and ice?
4N
5N
8N
10N
It is easier to roll a stone up a sloping road than to lift it vertical upwards because __________.
Work done in rolling is more than in lifting.
Work done in lifting the stone is equal to rolling it.
Work done in both is same but rate of doing work is less in rolling.
Work done in rolling stone is less than in lifting it.
The classroom door is of width 50cm. If the handle of the door is 20cm from the edge and force of 5N is applied on the handle. Compute the torque.
0.851Nm
8Nm
0.8 Nm
0.08Nm
Planets do not twinkle because___________.
they emit light of a constant intensity.
their distance from the earth does not change with time
they are very far away from the earth resulting in decrease in he intensity of light.
they are nearer to earth and hence we receive a greater amount of light and therefore minor variations are not noticeable.
A tank is filled with water is of upto 1m height.
Calculate the pressure exerted on the bottom of the tank.
10,000 Pascal
980 Pascal
9800 Pascal
1000 Pascal.
