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A bomb of mass 4m, while moving on a parabolic path, explodes at highest point of its path. If breaks into two parts of mass ratio 1:3, smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection when it strikes the ground is
22
Oct
A bomb of mass 4m, while moving on a parabolic path, explodes at highest point of its path. If breaks into two parts of mass ratio 1:3, smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection [...]
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A bomb of mass 4m ,
explodes at highest point of its path. If breaks into two parts of mass ratio 1:3 ,
smaller part coming to rest. The range of this projectile was 60m in the absence of explosion. The distance of the second part from the point of projection when it strikes the ground is ,
while moving on a parabolic path ,
A shell is fired from a cannon with a velocity 20m/s at an angle 60^∘ with the horizontal. At the highest point it explodes into three pieces of equal masses . One of the pieces retraces its path to the cannon , the second piece moves vertically up with speed 40m/s , the third piece will move with velocity (immediately after the explosion) 1. 20m/s in a horizontal direction 2. 40m/s at an angle 45^∘ with horizontal in an upward direction 3. 402–√m/s at an angle 45^∘ with horizontal in an upward direction 4. 402–√m/s at an angle 45^∘ with horizontal in the downward direction
22
Oct
A shell is fired from a cannon with a velocity 20m/s at an angle 60^∘ with the horizontal. At the highest point it explodes into three pieces of equal masses . One of the pieces retraces its path to the cannon , the second piece moves vertically up with speed 40m/s , the third piece [...]
An object , initially at rest , explodes in three fragments. The momentum of two pieces are −3piˆ and −4pjˆ where p is a positive number. The momentum of the third piece (i) will have magnitude 5p (ii) will make an angle tan^−1(4/3) with the x-axis (iii) will make an angle tan^−1(3/4) with the x-axis (iv) will have magnitude 7p
22
Oct
An object , initially at rest , explodes in three fragments. The momentum of two pieces are −3piˆ and −4pjˆ where p is a positive number. The momentum of the third piece (i) will have magnitude 5p (ii) will make an angle tan^−1(4/3) with the x-axis (iii) will make an angle tan^−1(3/4) with the x-axis [...]
A body at rest breaks up into 3 parts. If 2 parts having equal masses fly off perpendicularly each after with a velocity of 12m/s when the velocity of the third part which has 3 times mass of each part is 1. 42–√m/s at an angle of 45^∘ from each body 2. 242–√m/s at an angle of 135^∘ from each body 3. 42–√m/s at 135^∘ from each body 4. 42–√m/s at 135^∘ from each body
22
Oct
A body at rest breaks up into 3 parts. If 2 parts having equal masses fly off perpendicularly each after with a velocity of 12m/s when the velocity of the third part which has 3 times mass of each part is 1. 42–√m/s at an angle of 45^∘ from each body 2. 242–√m/s at an [...]
A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision
22
Oct
A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision A particle P moving with speed v undergoes a head -on elastic collision with another particle Q of identical mass but at rest. After the collision October 22, 2020 [...]
When an explosive shell travelling in a parabolic path under the effect of gravity explodes in the mid air, the centre of mass of the fragments will move. 1. vertically downwards 2. along the original parabolic path 3. vertically upwards and then vertically downwards 4. horizontally followed by parabolic path
22
Oct
When an explosive shell travelling in a parabolic path under the effect of gravity explodes in the mid air, the centre of mass of the fragments will move. 1. vertically downwards 2. along the original parabolic path 3. vertically upwards and then vertically downwards 4. horizontally followed by parabolic path A bomb explodes in air [...]
In an FM system, a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is
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Oct
In an FM system, a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is In an FM system October 22, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
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Oct
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Oct
An AM wave has 1800 W of total power content, For 100% modulation, the carrier should have power content equal to An AM wave has 1800 W of total power content For 100% modulation the carrier should have power content equal to October 22, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
Which of the following is the disadvantage of FM over AM ? (1) Larger band width requirement (2) Larger noise (3) Higher modulation power
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Oct
Which of the following is the disadvantage of FM over AM ? (1) Larger band width requirement (2) Larger noise (3) Higher modulation power Which of the following is the disadvantage of FM over AM ? (1) Larger band width requirement (2) Larger noise (3) Higher modulation power October 22, 2020 Category: Uncategorised (JEE Advanced [...]