13232 + Interview Questions in Physics Page 145 InterviewSolution

7201.	a ball is thrown vertically upward with an initial velocity 5 m/s from the top of tower having height 20m. find time taken to reach the ground
Answer» a ball is thrown vertically upward with an initial velocity 5 m/s from the top of tower having height 20m. find time taken to reach the ground

Discussion

7202.	A body moves over one fourth of a circular arc in a circle of radius r.What wil be the magnitude of the distance travelled and displacement?
Answer» A body moves over one fourth of a circular arc in a circle of radius r.What wil be the magnitude of the distance travelled and displacement?

Discussion

7203.	Give reasons: 1. A gas fills completely the vessel in which it is kept. 2. A wooden table called a solid 3. A gas eserts pressure on the walls of the container. 4. We can easily move our hand in air but to do the same through a solid block of wood we need karate expert.
Answer» Give reasons: 1. A gas fills completely the vessel in which it is kept. 2. A wooden table called a solid 3. A gas eserts pressure on the walls of the container. 4. We can easily move our hand in air but to do the same through a solid block of wood we need karate expert.

7203.

Give reasons: 1. A gas fills completely the vessel in which it is kept. 2. A wooden table called a solid 3. A gas eserts pressure on the walls of the container. 4. We can easily move our hand in air but to do the same through a solid block of wood we need karate expert.

Answer»

Give reasons:

1. A gas fills completely the vessel in which it is kept.

2. A wooden table called a solid

3. A gas eserts pressure on the walls of the container.

4. We can easily move our hand in air but to do the same through a solid block of wood we need karate expert.

Discussion

7204.	the magnetic field existing in a region is given by vector b = b0(1 + x/l)vector k. a square loop of edge i and carrying a current i, is placed with its edges parallel to the x-y axes. find the magnitude of the net magnetic force experienced by the loop
Answer» the magnetic field existing in a region is given by vector b = b0(1 + x/l)vector k. a square loop of edge i and carrying a current i, is placed with its edges parallel to the x-y axes. find the magnitude of the net magnetic force experienced by the loop

Discussion

7205.	A person is trying to push a car uphill. But he starts sliding backward along with car, work done by the person on the car is
Answer» A person is trying to push a car uphill. But he starts sliding backward along with car, work done by the person on the car is

Discussion

7206.	Washed clothes dry Faster on a windy day? why?
Answer» Washed clothes dry Faster on a windy day? why?

Discussion

7207.	Among the following fossil fuels, which one is the renewable source of energy?
Answer» Among the following fossil fuels, which one is the renewable source of energy?

7207.

Among the following fossil fuels, which one is the renewable source of energy?

Answer»

Among the following fossil fuels, which one is the renewable source of energy?

Discussion

7208.	State the approximate speed of ultrasound in air.
Answer» State the approximate speed of ultrasound in air.

Discussion

7209.	The no. of valance electron present in 8.4g of azide (N3-) ion is 1)1.6 2)3.2 3)4.8 4)8.0
Answer» The no. of valance electron present in 8.4g of azide (N3-) ion is 1)1.6 2)3.2 3)4.8 4)8.0

Discussion

7210.	निम्नलिखित प्रश्न का उत्तर (50-60 शब्दों में) लिखिए −एवरेस्ट पर चढ़ने के लिए कुल कितने कैंप बनाए गए? उनका वर्णन कीजिए।
Answer» निम्नलिखित प्रश्न का उत्तर (50-60 शब्दों में) लिखिए − एवरेस्ट पर चढ़ने के लिए कुल कितने कैंप बनाए गए? उनका वर्णन कीजिए।

7210.

निम्नलिखित प्रश्न का उत्तर (50-60 शब्दों में) लिखिए −एवरेस्ट पर चढ़ने के लिए कुल कितने कैंप बनाए गए? उनका वर्णन कीजिए।

Answer»

निम्नलिखित प्रश्न का उत्तर (50-60 शब्दों में) लिखिए −

एवरेस्ट पर चढ़ने के लिए कुल कितने कैंप बनाए गए? उनका वर्णन कीजिए।

Discussion

7211.	Determine the cell potential forCo(s)\|Co2+(aq)\|\|Au3+(aq)\|Au(s)E° Au3+\|Au= 1.50 V, E° Co2+\|Co = - 0.28V
Answer» Determine the cell potential for Co(s)\|Co2+(aq)\|\|Au3+(aq)\|Au(s) E° Au3+\|Au= 1.50 V, E° Co2+\|Co = - 0.28V

Discussion

7212.	a particle of mass m moves in a circular path of radius r under the action of force which delivers its constant power p and increases its speed the angular acceleration of particle at time t is proportional to1)1/root t2)root t3)t^ knot4)t^3/2
Answer» a particle of mass m moves in a circular path of radius r under the action of force which delivers its constant power p and increases its speed the angular acceleration of particle at time t is proportional to 1)1/root t 2)root t 3)t^ knot 4)t^3/2

Discussion

7213.	A stone of mass 1 kg is thrown with a velocity of 20 m/s across the frozen surface of a lake. It comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?
Answer» A stone of mass 1 kg is thrown with a velocity of 20 m/s across the frozen surface of a lake. It comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?

Discussion

7214.	The potential energy is least when you are ___.
Answer» The potential energy is least when you are ___.

Discussion

7215.	ntKnetic energy acquired by mass m travelling distance d , start from rest , under action of constant force F is = ?n
Answer» ntKnetic energy acquired by mass m travelling distance d , start from rest , under action of constant force F is = ?n

Discussion

7216.	what is fibrillation its causes and depiction in ECG
Answer» what is fibrillation its causes and depiction in ECG

Discussion

7217.	Find the mass of a 3.5 m long lead pipe, if the external diameter of the pipe is 2.4 cm, thickness of the metal is 2 mm and the mass of 1 cm3 of lead is 11.4 grams.
Answer» Find the mass of a 3.5 m long lead pipe, if the external diameter of the pipe is 2.4 cm, thickness of the metal is 2 mm and the mass of 1 cm³ of lead is 11.4 grams.

Discussion

7218.	The resistance of a metal wire is 10Ω. A current of 30 mA is flowing in it at 20∘C. If the potential difference across its ends is constant and its increased to 120∘ C, then the current flowing in the wire will be in (mA) (temperature coefficient of resistance is 5×10−3 ∘C−1.
Answer» The resistance of a metal wire is $10 Ω$ . A current of $30 mA$ is flowing in it at $20^{\circ} C$ . If the potential difference across its ends is constant and its increased to $120^{\circ} C$ , then the current flowing in the wire will be in ( $mA$ ) (temperature coefficient of resistance is $5 \times 10^{- 3}^{\circ} C^{- 1}$ .

Discussion

7219.	116.Figure shows electric field lines in which electric dipole p is placed as shown. Choose the correct statement Image not present The dipole wil
Answer» 116.Figure shows electric field lines in which electric dipole p is placed as shown. Choose the correct statement Image not present The dipole wil

Discussion

7220.	128.A person walks up a stalled escalator in 90 sec.when standing on the same escalator now moving, he is carried in 60 sec.the time he would take to walk up the moving escalator Wii be
Answer» 128.A person walks up a stalled escalator in 90 sec.when standing on the same escalator now moving, he is carried in 60 sec.the time he would take to walk up the moving escalator Wii be

Discussion

7221.	A body is moving along the +ve X-axiswith uniform acceleration of -4 ms2.Its velocity at x 0 is 10 ms. The timetaken by the body to reach a point atX= 12m is
Answer» A body is moving along the +ve X-axiswith uniform acceleration of -4 ms2.Its velocity at x 0 is 10 ms. The timetaken by the body to reach a point atX= 12m is

Discussion

7222.	Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024 kg/m3.
Answer» Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024 kg/m³.

Discussion

7223.	Question 1Which of the following statements is correct about receptors?(a) Gustatory receptors detect taste while olfactory receptors detect smell(b) Both gustatory and olfactory receptors detect smell(c) Auditory receptors detect smell and olfactory receptors detect taste(d) Olfactory receptors detect taste and gustatory receptors smell
Answer» Question 1 Which of the following statements is correct about receptors? (a) Gustatory receptors detect taste while olfactory receptors detect smell (b) Both gustatory and olfactory receptors detect smell (c) Auditory receptors detect smell and olfactory receptors detect taste (d) Olfactory receptors detect taste and gustatory receptors smell

Discussion

7224.	The temperature T and the volume V of a gas are connected by the relation TV1.2= constant. The percentage error in T which corresponds to a decrease of 15% in V is
Answer» The temperature $T$ and the volume $V$ of a gas are connected by the relation $T V^{1.2} =$ constant. The percentage error in $T$ which corresponds to a decrease of $\frac{1}{5} %$ in $V$ is

Discussion

7225.	Four charges of equal magnitude "q" are placed along the corners of a square, what is the net force experienced by one of the Charge?
Answer» Four charges of equal magnitude "q" are placed along the corners of a square, what is the net force experienced by one of the Charge?

Discussion

7226.	A particle is thrown with a velocity 60 m/s at an1.angle 30^° from horizontal. If it passes point A andB at same height at time 2 s and 4 s then heightof the point A or B isX2 40 m(1) 45 m(3) 20 m(4) 50 m
Answer» A particle is thrown with a velocity 60 m/s at an1.angle 30^° from horizontal. If it passes point A andB at same height at time 2 s and 4 s then heightof the point A or B isX2 40 m(1) 45 m(3) 20 m(4) 50 m

Discussion

7227.	Two friends on rollerskates are standing 5 m apart facing each other . One of them throws a ball of 2 kg towards the other , who catches it . How will this activity affect the position of the two ? Explain your answer .
Answer» Two friends on rollerskates are standing 5 m apart facing each other . One of them throws a ball of 2 kg towards the other , who catches it . How will this activity affect the position of the two ? Explain your answer .

Discussion

7228.	Where does the centre of curvature lie:-
Answer» Where does the centre of curvature lie:-

7228.

Where does the centre of curvature lie:-

Answer»

Where does the centre of curvature lie:-

Discussion

7229.	A piece of lead weighs 100g in water.If density of lead is 11g/cm3 then weight of the piece of lead in air is?
Answer» A piece of lead weighs 100g in water.If density of lead is 11g/cm3 then weight of the piece of lead in air is?

Discussion

7230.	ntA particle moves in a circular path of radius r, in half of its period. Its displacement and distance covered aren
Answer» ntA particle moves in a circular path of radius r, in half of its period. Its displacement and distance covered aren

Discussion

7231.	A force of 200N acts on a body.If the unit of mass and length is doubled and unit of time halved then the numerical value of this force in the new system becomes 50
Answer» A force of 200N acts on a body.If the unit of mass and length is doubled and unit of time halved then the numerical value of this force in the new system becomes 50

Discussion

7232.	Given are the two circuits with resistors R1 and R2. Which of the statement is correct regarding the connection of resistors R1 and R2?
Answer» Given are the two circuits with resistors R₁ and R₂. Which of the statement is correct regarding the connection of resistors R₁ and R₂?

7232.

Given are the two circuits with resistors R1 and R2. Which of the statement is correct regarding the connection of resistors R1 and R2?

Answer»

Given are the two circuits with resistors R₁ and R₂. Which of the statement is correct regarding the connection of resistors R₁ and R₂?

Discussion

7233.	Why does ice float on water?
Answer» Why does ice float on water?

Discussion

7234.	Answer the following:(1) A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. Will the water overflow when the ice melts? Give reasons.(2) A block of plastic is released under water. Will it sink or come up to the surface of water? Give reasons.
Answer» Answer the following: (1) A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. Will the water overflow when the ice melts? Give reasons. (2) A block of plastic is released under water. Will it sink or come up to the surface of water? Give reasons.

7234.

Answer the following:(1) A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. Will the water overflow when the ice melts? Give reasons.(2) A block of plastic is released under water. Will it sink or come up to the surface of water? Give reasons.

Answer»

Answer the following:

(1) A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. Will the water overflow when the ice melts? Give reasons.

(2) A block of plastic is released under water. Will it sink or come up to the surface of water? Give reasons.

Discussion

7235.	What is the differencre between voltage and current (dc)
Answer» What is the differencre between voltage and current (dc)

Discussion

7236.	35.How p-n junction diode works?
Answer» 35.How p-n junction diode works?

Discussion

7237.	If n(A∩B)=5, n(A∪B)=35, n(A) = 13, find n(B) .
Answer» If $n (A \cap B) = 5$ , $n (A \cup B) = 35$ , n(A) = 13, find n(B) .

Discussion

7238.	A bullet of mass 100 g has shot with a velocity of 1000 km/hr towards the target. What would be it's kinetic energy?
Answer» A bullet of mass $100 g$ has shot with a velocity of $1000 k m / h r$ towards the target. What would be it's kinetic energy?

Discussion

7239.	A car is moving in a circular path of radius 2 m. Calculate both the distance and the magnitude of the displacement of the car after i) one complete revolution ii) one-half revolution iii) one-fourth revolution. What can you conclude about the relationship between distance and displacement?
Answer» A car is moving in a circular path of radius 2 m. Calculate both the distance and the magnitude of the displacement of the car after i) one complete revolution ii) one-half revolution iii) one-fourth revolution. What can you conclude about the relationship between distance and displacement?

Discussion

7240.	A person complaints a round of circular track of radius r in 40 seconds at the end of 2 minutes displacement will be
Answer» A person complaints a round of circular track of radius r in 40 seconds at the end of 2 minutes displacement will be

Discussion

7241.	When is a body said to be in motion ?
Answer» When is a body said to be in motion ?

Discussion

7242.	what will be time period of earth if the radius of the earth is halved?
Answer» what will be time period of earth if the radius of the earth is halved?

Discussion

7243.	17.Two blocks of mass M and m respectively are kept in contact on a frictionless table. The experimenter pushes M from behind so that the blocks accelerate. If M exerts a force 'R' on the m, what is F? A)RM/m B)R(1+M/m) C)RM/M D)R(1+m/M)
Answer» 17.Two blocks of mass M and m respectively are kept in contact on a frictionless table. The experimenter pushes M from behind so that the blocks accelerate. If M exerts a force 'R' on the m, what is F? A)RM/m B)R(1+M/m) C)RM/M D)R(1+m/M)

Discussion

7244.	When anyone jumps from ground to air ,at the maximum height that it attains why it's velocity is 0 but acceleration is nonzero
Answer» When anyone jumps from ground to air ,at the maximum height that it attains why it's velocity is 0 but acceleration is nonzero

Discussion

7245.	Explain counter current mechanism.
Answer» Explain counter current mechanism.

Discussion

7246.	Please explain work and kinetic and potential energy?
Answer» Please explain work and kinetic and potential energy?

Discussion

7247.	a stone projected up with velociyt u reaches a maximum height h. When it is at a height of 3h/4 from the ground, the ratio of kE and PE at that point i
Answer» a stone projected up with velociyt u reaches a maximum height h. When it is at a height of 3h/4 from the ground, the ratio of kE and PE at that point i

Discussion

7248.	A particle of mass 1g executes an oscillatory motion on the concave surface of a spherical dish of radius 2m placed on a horizontal plane.If the motion of the particle begins from a point on the dish at a height of 1cm from the horizontal plane,the total dis†an ce covered by the particle before it comes to rest,is (curve surface is smooth and μ=0.01 for horizontal surface) 1.2m 2.10m 3.1m 4.20
Answer» A particle of mass 1g executes an oscillatory motion on the concave surface of a spherical dish of radius 2m placed on a horizontal plane.If the motion of the particle begins from a point on the dish at a height of 1cm from the horizontal plane,the total dis†an ce covered by the particle before it comes to rest,is (curve surface is smooth and μ=0.01 for horizontal surface) 1.2m 2.10m 3.1m 4.20

Discussion

7249.	Why does a thick tumbler cracks when we pour hot water into it?
Answer» Why does a thick tumbler cracks when we pour hot water into it?

Discussion

7250.	During a race, you are accelerating on a leveled track and acquired a velocity 3 times your initial velocity. What was the change in your potential energy?
Answer» During a race, you are accelerating on a leveled track and acquired a velocity $3$ times your initial velocity. What was the change in your potential energy?

Discussion

Explore topic-wise InterviewSolutions in .

a ball is thrown vertically upward with an initial velocity 5 m/s from the top of tower having height 20m. find time taken to reach the ground

A body moves over one fourth of a circular arc in a circle of radius r.What wil be the magnitude of the distance travelled and displacement?

Give reasons: 1. A gas fills completely the vessel in which it is kept. 2. A wooden table called a solid 3. A gas eserts pressure on the walls of the container. 4. We can easily move our hand in air but to do the same through a solid block of wood we need karate expert.

the magnetic field existing in a region is given by vector b = b0(1 + x/l)vector k. a square loop of edge i and carrying a current i, is placed with its edges parallel to the x-y axes. find the magnitude of the net magnetic force experienced by the loop

A person is trying to push a car uphill. But he starts sliding backward along with car, work done by the person on the car is

Washed clothes dry Faster on a windy day? why?

Among the following fossil fuels, which one is the renewable source of energy?

State the approximate speed of ultrasound in air.

The no. of valance electron present in 8.4g of azide (N3-) ion is 1)1.6 2)3.2 3)4.8 4)8.0

निम्नलिखित प्रश्न का उत्तर (50-60 शब्दों में) लिखिए −एवरेस्ट पर चढ़ने के लिए कुल कितने कैंप बनाए गए? उनका वर्णन कीजिए।

Determine the cell potential forCo(s)|Co2+(aq)||Au3+(aq)|Au(s)E° Au3+|Au= 1.50 V, E° Co2+|Co = - 0.28V

a particle of mass m moves in a circular path of radius r under the action of force which delivers its constant power p and increases its speed the angular acceleration of particle at time t is proportional to1)1/root t2)root t3)t^ knot4)t^3/2

A stone of mass 1 kg is thrown with a velocity of 20 m/s across the frozen surface of a lake. It comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?

The potential energy is least when you are ___.

ntKnetic energy acquired by mass m travelling distance d , start from rest , under action of constant force F is = ?n

what is fibrillation its causes and depiction in ECG

Find the mass of a 3.5 m long lead pipe, if the external diameter of the pipe is 2.4 cm, thickness of the metal is 2 mm and the mass of 1 cm3 of lead is 11.4 grams.

The resistance of a metal wire is 10Ω. A current of 30 mA is flowing in it at 20∘C. If the potential difference across its ends is constant and its increased to 120∘ C, then the current flowing in the wire will be in (mA) (temperature coefficient of resistance is 5×10−3 ∘C−1.

116.Figure shows electric field lines in which electric dipole p is placed as shown. Choose the correct statement Image not present The dipole wil

128.A person walks up a stalled escalator in 90 sec.when standing on the same escalator now moving, he is carried in 60 sec.the time he would take to walk up the moving escalator Wii be

A body is moving along the +ve X-axiswith uniform acceleration of -4 ms2.Its velocity at x 0 is 10 ms. The timetaken by the body to reach a point atX= 12m is

Calculate the pressure at a depth of 50 m below the surface of the sea. The density of sea water is 1024 kg/m3.

The temperature T and the volume V of a gas are connected by the relation TV1.2= constant. The percentage error in T which corresponds to a decrease of 15% in V is

Four charges of equal magnitude "q" are placed along the corners of a square, what is the net force experienced by one of the Charge?

A particle is thrown with a velocity 60 m/s at an1.angle 30^° from horizontal. If it passes point A andB at same height at time 2 s and 4 s then heightof the point A or B isX2 40 m(1) 45 m(3) 20 m(4) 50 m

Two friends on rollerskates are standing 5 m apart facing each other . One of them throws a ball of 2 kg towards the other , who catches it . How will this activity affect the position of the two ? Explain your answer .

Where does the centre of curvature lie:-

A piece of lead weighs 100g in water.If density of lead is 11g/cm3 then weight of the piece of lead in air is?

ntA particle moves in a circular path of radius r, in half of its period. Its displacement and distance covered aren

A force of 200N acts on a body.If the unit of mass and length is doubled and unit of time halved then the numerical value of this force in the new system becomes 50

Given are the two circuits with resistors R1 and R2. Which of the statement is correct regarding the connection of resistors R1 and R2?

Why does ice float on water?

Answer the following:(1) A glass of water has an ice cube floating in water. The water level just touches the rim of the glass. Will the water overflow when the ice melts? Give reasons.(2) A block of plastic is released under water. Will it sink or come up to the surface of water? Give reasons.

What is the differencre between voltage and current (dc)

35.How p-n junction diode works?

If n(A∩B)=5, n(A∪B)=35, n(A) = 13, find n(B) .

A bullet of mass 100 g has shot with a velocity of 1000 km/hr towards the target. What would be it's kinetic energy?

A car is moving in a circular path of radius 2 m. Calculate both the distance and the magnitude of the displacement of the car after i) one complete revolution ii) one-half revolution iii) one-fourth revolution. What can you conclude about the relationship between distance and displacement?

A person complaints a round of circular track of radius r in 40 seconds at the end of 2 minutes displacement will be

When is a body said to be in motion ?

what will be time period of earth if the radius of the earth is halved?

17.Two blocks of mass M and m respectively are kept in contact on a frictionless table. The experimenter pushes M from behind so that the blocks accelerate. If M exerts a force 'R' on the m, what is F? A)RM/m B)R(1+M/m) C)RM/M D)R(1+m/M)

When anyone jumps from ground to air ,at the maximum height that it attains why it's velocity is 0 but acceleration is nonzero

Explain counter current mechanism.

Please explain work and kinetic and potential energy?

a stone projected up with velociyt u reaches a maximum height h. When it is at a height of 3h/4 from the ground, the ratio of kE and PE at that point i

Why does a thick tumbler cracks when we pour hot water into it?

During a race, you are accelerating on a leveled track and acquired a velocity 3 times your initial velocity. What was the change in your potential energy?