Physics Past Questions and Answers

An alternating source is connected in series to a capacitor of capacity reactance \( 10^3 \sqrt{3} \) and a resistor of resistance 10³ Ohms. The Impedance of the circuit is...

A \( 2000 \sqrt{3} \) Ohms
B 2000 Ohms
C \( 1000 \sqrt{3} \) Ohms
D 1000 Ohms

Question 42:

In the above fig, PQ and R are vectors, which of the following options, gives a correct relationship between the vectors

A P = Q + R
B P = Q - R
C P = R - Q
D P + Q + R = O

Question 43:

The value of T in the figure above is

A 10.0N
B 11.8N
C 20.0N
D 40.0N

Question 44:

The acceleration of the system show above is

A 2ms^-2
B 4ms^-2
C 6ms^-2
D 8ms^-2

Question 45:

A body of mass 40kg is being dragged along the floor by a rope inclined at 60 degrees to the horizontal. The frictional force between the box and the floor is 100N and the tension on the rope is 300N. How much work is done by dragging the box for a distance of 4m

A 680J
B 400J
C 200J
D 100J