Physics-

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#### A small particle of mass is projected at an angle with the -axis with an initial velocity in the - plane as shown in the figure. the angular momentum of the particle is

#### The correct answer is:

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### Related Questions to study

physics-

#### The figures represent three cases of a ray passing through a prism of angle *A*. The case corresponding to minimum deviation is

#### The figures represent three cases of a ray passing through a prism of angle *A*. The case corresponding to minimum deviation is

physics-General

Maths-

#### If the normal at the point to the ellipse intersects it again at the point , then is

#### If the normal at the point to the ellipse intersects it again at the point , then is

Maths-General

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#### A fighter plane enters inside the enemy territory, at time with velocity and moves horizontally with constant acceleration (see figure). An enemy tank at the border, spot the plane and fire shots at an angle with the horizontal and with velocity . At what altitude of the plane it can be hit by the shot?

If it is being hit then

or

or

#### A fighter plane enters inside the enemy territory, at time with velocity and moves horizontally with constant acceleration (see figure). An enemy tank at the border, spot the plane and fire shots at an angle with the horizontal and with velocity . At what altitude of the plane it can be hit by the shot?

physics-General

If it is being hit then

or

or

physics-

#### A light ray is incident by grazing one of the face of a prism and after refraction ray does not emerge out, what should be the angle of prism while critical angle is *C</em*

#### A light ray is incident by grazing one of the face of a prism and after refraction ray does not emerge out, what should be the angle of prism while critical angle is *C</em*

physics-General

physics-

#### A particle of mass is rotating in a horizontal circle of radius and is attached to a hanging mass as shown in the figure. The speed of rotation required by the mass keep steady is

To keep the mass

For mass

From Eqs. (i) and (ii)

*M*steady, let*T*is the tension in the string joining the two. Then for particleFor mass

From Eqs. (i) and (ii)

#### A particle of mass is rotating in a horizontal circle of radius and is attached to a hanging mass as shown in the figure. The speed of rotation required by the mass keep steady is

physics-General

To keep the mass

For mass

From Eqs. (i) and (ii)

*M*steady, let*T*is the tension in the string joining the two. Then for particleFor mass

From Eqs. (i) and (ii)

physics-

#### Figure shows the variation of the stopping potential (V_{0}) with the frequency (v) of theincident radiations for two different photosensitive material M_{1} and M_{2} .What are the values of work functions for M_{1} and M_{2} respectively

#### Figure shows the variation of the stopping potential (V_{0}) with the frequency (v) of theincident radiations for two different photosensitive material M_{1} and M_{2} .What are the values of work functions for M_{1} and M_{2} respectively

physics-General

physics-

#### The respective angles of the flint and crown glass prisms are and *A*. They are to be used for dispersion without deviation, then the ratio of their angles will be

Since

#### The respective angles of the flint and crown glass prisms are and *A*. They are to be used for dispersion without deviation, then the ratio of their angles will be

physics-General

Since

physics-

#### The two lines A and B shown in figure are the agraphs of the de Broglie wavelength l as function of (V is the accelerating potential) for two particles having the same charge

Which of the two represents the particle of heavier mass ?

#### The two lines A and B shown in figure are the agraphs of the de Broglie wavelength l as function of (V is the accelerating potential) for two particles having the same charge

Which of the two represents the particle of heavier mass ?

physics-General

physics-

#### In a photoelectric experiment anode potential is plotted against plate current

#### In a photoelectric experiment anode potential is plotted against plate current

physics-General

physics-

#### From an inclined plane two particles are projected with same speed at same angle , one up and other down the plane as shown in figure. Which of the following statements is/are correct?

Here,

Time of flight of is,

Time of flight of is,

So, . The acceleration of both the particles is downwards. Therefore, relative acceleration between the two is zero or relative motion between the two is uniform. The relative velocity of w.r.t. is towards , therefore collision will take place between the two in mid air.

Time of flight of is,

Time of flight of is,

So, . The acceleration of both the particles is downwards. Therefore, relative acceleration between the two is zero or relative motion between the two is uniform. The relative velocity of w.r.t. is towards , therefore collision will take place between the two in mid air.

#### From an inclined plane two particles are projected with same speed at same angle , one up and other down the plane as shown in figure. Which of the following statements is/are correct?

physics-General

Here,

Time of flight of is,

Time of flight of is,

So, . The acceleration of both the particles is downwards. Therefore, relative acceleration between the two is zero or relative motion between the two is uniform. The relative velocity of w.r.t. is towards , therefore collision will take place between the two in mid air.

Time of flight of is,

Time of flight of is,

So, . The acceleration of both the particles is downwards. Therefore, relative acceleration between the two is zero or relative motion between the two is uniform. The relative velocity of w.r.t. is towards , therefore collision will take place between the two in mid air.

physics-

#### a) Name the experiment for which the adjacent graph, showing the variation of intensity of scattered electrons with the angle of scatter ing (q) was obtained.

b) Also name the important hypothesis that was confirmed by this experiment

#### a) Name the experiment for which the adjacent graph, showing the variation of intensity of scattered electrons with the angle of scatter ing (q) was obtained.

b) Also name the important hypothesis that was confirmed by this experiment

physics-General

physics-

#### Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is , then the ratio of tensions in the three sections of the string is

Let is the angular speed of revolution

#### Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is , then the ratio of tensions in the three sections of the string is

physics-General

Let is the angular speed of revolution

physics-

#### A ball of mass kg is attached to the end of a string having length 0.5 m. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is 324 N. The maximum possible value of angular velocity of ball (in rad/s) is

component will cancel

Component will provide necessary centripetal force the ball towards center

Component will provide necessary centripetal force the ball towards center

*C.*#### A ball of mass kg is attached to the end of a string having length 0.5 m. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is 324 N. The maximum possible value of angular velocity of ball (in rad/s) is

physics-General

component will cancel

Component will provide necessary centripetal force the ball towards center

Component will provide necessary centripetal force the ball towards center

*C.*maths-

#### The ellipse and the straight line y = mx + c intersect in real points only if

= 1

Þ (b

D > 0 Þ m

Þ (b

^{2}+ a^{2}m^{2}) x^{2}+ 2 mca^{2}x + a^{2}(c^{2 }- b^{2}) = 0D > 0 Þ m

^{2}c^{2}a^{4}- a^{2}(c^{2}- b^{2})(b^{2}+ a^{2}m^{2}) > 0 Þ b^{2}+ a^{2}m^{2}> c^{2}#### The ellipse and the straight line y = mx + c intersect in real points only if

maths-General

= 1

Þ (b

D > 0 Þ m

Þ (b

^{2}+ a^{2}m^{2}) x^{2}+ 2 mca^{2}x + a^{2}(c^{2 }- b^{2}) = 0D > 0 Þ m

^{2}c^{2}a^{4}- a^{2}(c^{2}- b^{2})(b^{2}+ a^{2}m^{2}) > 0 Þ b^{2}+ a^{2}m^{2}> c^{2}physics-

#### Four capacitors are connected as shown in figure. The equivalent capacitance between and is

Capacitance between A and B

#### Four capacitors are connected as shown in figure. The equivalent capacitance between and is

physics-General

Capacitance between A and B