Physics-
General
Easy

Question

A string is wrapped round a log of wood and it is pulled with a force F as shown in the figure.Choose the correct statement(s).
I Tension T in the string decreases with increase in theta, II Tension T greater than F text  if  end text theta greater than pi divided by 3

  1. only I is true    
  2. both are true    
  3. only II is true    
  4. both are wrong    

The correct answer is: only II is true

Related Questions to study

General
physics-

The temperature at the bottom of a pond of depth L is 4oC. The temperature of the air, just above the layer of ice frozen at the pond’s surface is –2oC for the past many days. The thermal conductivity of ice is three times that of water. The thickness of the frozen layer of ice must be

The temperature at the bottom of a pond of depth L is 4oC. The temperature of the air, just above the layer of ice frozen at the pond’s surface is –2oC for the past many days. The thermal conductivity of ice is three times that of water. The thickness of the frozen layer of ice must be

physics-General
General
physics-

The load versus elongation graph for four wires of the same material is shown in the figure. The thinnest wire is represented by the line

The load versus elongation graph for four wires of the same material is shown in the figure. The thinnest wire is represented by the line

physics-General
General
physics-

In the figure shown if the object ‘O’ moves towards the plane mirror, then the image I (which is formed after successive reflections from M1 & M2 respectively) will move:

In the figure shown if the object ‘O’ moves towards the plane mirror, then the image I (which is formed after successive reflections from M1 & M2 respectively) will move:

physics-General
parallel
General
physics-

A uniform ring is rotating about vertical axis with angular velocity omega initially. A point insect (S) having the same mass as that of the ring starts walking from the lowest point P1 and finally reaches the point P2 (as shown in figure). The final angular velocity of the ring will be equal to

A uniform ring is rotating about vertical axis with angular velocity omega initially. A point insect (S) having the same mass as that of the ring starts walking from the lowest point P1 and finally reaches the point P2 (as shown in figure). The final angular velocity of the ring will be equal to

physics-General
General
physics-

The P-V graph of two different samples having masses m1 and m2 of a gas for isothermal processes are shown in figure at temperatures T1 and T2 respectively

The P-V graph of two different samples having masses m1 and m2 of a gas for isothermal processes are shown in figure at temperatures T1 and T2 respectively

physics-General
General
physics-

In beta -decay, the Q-value of the process is E. Then

In beta -decay, the Q-value of the process is E. Then

physics-General
parallel
General
physics-

Values of VL and VC are respectively

Values of VL and VC are respectively

physics-General
General
physics-

The circuit is constructed so that the inductor is next to the capacitor. What result should the student expect for a measurement of the combined potential difference open parentheses capital delta V subscript L end subscript plus capital delta V subscript C end subscript close parentheses subscript m a x end subscript across the inductor and capacitor?

The circuit is constructed so that the inductor is next to the capacitor. What result should the student expect for a measurement of the combined potential difference open parentheses capital delta V subscript L end subscript plus capital delta V subscript C end subscript close parentheses subscript m a x end subscript across the inductor and capacitor?

physics-General
General
physics-

In the figure the reading of voltmeter is

In the figure the reading of voltmeter is

physics-General
parallel
General
physics-

In the figure, if I subscript L end subscript equals 0.8 A comma I subscript C end subscript equals 0.6 A comma text  then  end text I equals?

In the figure, if I subscript L end subscript equals 0.8 A comma I subscript C end subscript equals 0.6 A comma text  then  end text I equals?

physics-General
General
physics-

A block of mass ‘m’ is attached to a spring in natural length of spring constant ‘k’. The other end A of the spring is moved with a constant velocity v away from the block. Find the maximum extension in the spring

A block of mass ‘m’ is attached to a spring in natural length of spring constant ‘k’. The other end A of the spring is moved with a constant velocity v away from the block. Find the maximum extension in the spring

physics-General
General
physics-

The switch in the circuit pictured is in position a for a long time. At t = 0 the switch is moved from a to b. The current through the inductor will reach its first maximum after moving the switch in a time:

The switch in the circuit pictured is in position a for a long time. At t = 0 the switch is moved from a to b. The current through the inductor will reach its first maximum after moving the switch in a time:

physics-General
parallel
General
physics-

The circuit shown in figure consisting of three identical lamps and two coils is connected to a direct current source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Which of the following statement(s) is/are correct for the instant immediately after opening the switch?

The circuit shown in figure consisting of three identical lamps and two coils is connected to a direct current source. The ohmic resistance of the coils is negligible. After some time switch S is opened. Which of the following statement(s) is/are correct for the instant immediately after opening the switch?

physics-General
General
physics-

The diagram shows a solenoid carrying time varying current I = I0 t (I0 is constant) On the axis of this solenoid a conducting ring is being placed as shown in figure. The mutual inductance of the ring and the solenoid is M and self inductance of the ring is L. If the resistance of the ring is R then the maximum current which can flow through the ring is

The diagram shows a solenoid carrying time varying current I = I0 t (I0 is constant) On the axis of this solenoid a conducting ring is being placed as shown in figure. The mutual inductance of the ring and the solenoid is M and self inductance of the ring is L. If the resistance of the ring is R then the maximum current which can flow through the ring is

physics-General
General
physics-

A solenoid is oriented end-on so that its opening is perpendicular to the circuit containing the two light bulbs as drawn in figure C1. For figure C2 and C3, a shorting wire of negligible resistance is added as shown. Assume that the magnetic field from the solenoid, shown coming out of the plane of the page, decreases uniformly with time at the same rate for each circuit. Rank the circuits for the brightness of the bulb labeled R1 from brightest to dimmest.

A solenoid is oriented end-on so that its opening is perpendicular to the circuit containing the two light bulbs as drawn in figure C1. For figure C2 and C3, a shorting wire of negligible resistance is added as shown. Assume that the magnetic field from the solenoid, shown coming out of the plane of the page, decreases uniformly with time at the same rate for each circuit. Rank the circuits for the brightness of the bulb labeled R1 from brightest to dimmest.

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.