General Fields

Q.

A particle executing simple harmonic motion along y axis .its motion is described by the equation y=Asinwt+B.the amplitude of the shm is

Q. ntQ. In a certain oscillatory system, the amplitude of motion is 5m and the time period id 4s. The time taken by the particle for passing between points which are at distances of 4m and 2m from the centre and on the same side of it will be:n nt1. 0.30sn nt2. 0.32sn nt3. 0.33sn nt4. 0.35sn ntn ntA.(3)n

Q.

Out of gravitational, electromagnetic, Vander Waals, electrostatic and nuclear forces; which two are able to provide an attractive force between two neutrons

1. Electrostatic and nuclear

2. Some other forces like Vander Waals

3. Electrostatic and gravitational

4. Gravitational and nuclear

Q.

If $E$, $G$ and $N$ represent the magnitudes of electromagnetic, gravitational and nuclear forces between two protons at a given separation, then

1. $N=E=G$

2. $E<N<G$

3. $N>G<E$

4. $E>G>N$

Q.

A simple pendulum is oscillating between two points A and B as shown in Figure. Is the motion of the bob uniform or non-uniform?

Fig. \( 13.5 \)

Q.

Name the force which holds the planets in their orbits around the sun.

1. Gravitational force of attraction

2. Electrostatic force of attraction

3. Nuclear force of attarction

4. Electromagnetic force of attraction

Q. derive the expression of displacement of a block which is attached to a spring constant k and executing simple harmonic motion

Q. ntA particle performs SHM in a straightline.In the first second , starting from rest , it travels a distance a and in the next second travels a distance b in the same side of mean position.The amplitude of SHM isn nta)a-bn ntb)2a-b/3n ntc)2asquare/3a-bn ntd)none of thesen

Q. Two protons are kept at a separation of 10 nm Let Fn and Fe be the nuclear force and electromagnetic force between them.

1. $F_e=F_n$
2. $F_e>>F_n$
3. $F_e<<F_n$
4. $F_e\text{and}{F}_n$ differ only slightly

Q. A particle moves in the X-Y plane according to the equation

The motion of the particle is
(a) on a straight line
(b) on an ellipse
(c) periodic
(d) simple harmonic

Q.

1. Move to the origin and remain at rest

2. Move to infinity

3. Execute simple harmonic motion about the origin

4. Execute oscillatory but not simple harmonic motion

Q. Representation of wind flow across a country on a map is a vector field.

1. False
2. True

Q. Calculate the angular speed of a fly wheel making 420 revolution per minute?

Q. A particle is subjected to two simple harmonic motions, one along the X-axis and the other on a line making an angle of 45° with the X-axis. The two motions are given by x = x₀ sin ωt and s = s₀ sin ωt. Find the amplitude of the resultant motion.

Q. The following quantities are represented on a map. Which of them would result in a scalar fields?

1. temperature
2. Field of gravity
3. wind flow
4. traffic flow
5. altitude
6. water content
7. average rainfall
8. human population

Q. Representation of wind flow across a country on a map is a vector field.

1. False
2. True