13232 + Interview Questions in Physics Page 164 InterviewSolution

8151.	When a cricket ball is thrown vertically upwards, it reaches a maximum height of 5 metres. (a) What was the initial speed of the ball ? (b)) How much time is taken by the ball to reach the highest point ? (g=10ms−2)
Answer» When a cricket ball is thrown vertically upwards, it reaches a maximum height of 5 metres. (a) What was the initial speed of the ball ? (b)) How much time is taken by the ball to reach the highest point ? $(g = 10 m s^{- 2})$

Discussion

8152.	An ant first travels from P to R on a right angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant.
Answer» An ant first travels from P to R on a right angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant.

8152.

An ant first travels from P to R on a right angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant.

Answer»

An ant first travels from P to R on a right angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant.

Discussion

8153.	How much watt are there in one horse power
Answer» How much watt are there in one horse power

Discussion

8154.	Fill in the following blanks with suitable words : (a) If a body moves with uniform velocity, its acceleration is ............... (b) The slope of a distance-time graph indicates .................of a moving body. (c) The slope of a speed-time graph of a moving body gives its............ (d) In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the ..........by the body. (e) It is possible for something to accelerate but not change its speed if it moves in a ..................
Answer» Fill in the following blanks with suitable words : (a) If a body moves with uniform velocity, its acceleration is ............... (b) The slope of a distance-time graph indicates .................of a moving body. (c) The slope of a speed-time graph of a moving body gives its............ (d) In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the ..........by the body. (e) It is possible for something to accelerate but not change its speed if it moves in a ..................

8154.

Fill in the following blanks with suitable words : (a) If a body moves with uniform velocity, its acceleration is ............... (b) The slope of a distance-time graph indicates .................of a moving body. (c) The slope of a speed-time graph of a moving body gives its............ (d) In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the ..........by the body. (e) It is possible for something to accelerate but not change its speed if it moves in a ..................

Answer»

Fill in the following blanks with suitable words :

(a) If a body moves with uniform velocity, its acceleration is ...............

(b) The slope of a distance-time graph indicates .................of a moving body.

(c) The slope of a speed-time graph of a moving body gives its............

(d) In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the ..........by the body.

(e) It is possible for something to accelerate but not change its speed if it moves in a ..................

Discussion

8155.	How to prove , frequency= 1/ 2 . Please explain
Answer» How to prove , frequency= 1/ 2 . Please explain

Discussion

8156.	An energy pyramid depicts the amount of energy contained in each trophic level, as one progresses from first tropic level to fourth trophic level in this pyramid, what happens to the amount of stored energy?
Answer» An energy pyramid depicts the amount of energy contained in each trophic level, as one progresses from first tropic level to fourth trophic level in this pyramid, what happens to the amount of stored energy?

8156.

An energy pyramid depicts the amount of energy contained in each trophic level, as one progresses from first tropic level to fourth trophic level in this pyramid, what happens to the amount of stored energy?

Answer»

An energy pyramid depicts the amount of energy contained in each trophic level, as one progresses from first tropic level to fourth trophic level in this pyramid, what happens to the amount of stored energy?

Discussion

8157.	An object of size 2.0cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals to the radius of curvature. What will be the size of the image?
Answer» An object of size 2.0cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals to the radius of curvature. What will be the size of the image?

Discussion

8158.	What is upthrust ?
Answer» What is upthrust ?

Discussion

8159.	A 2.00-kg projectile is fired upward at an ∠20∘ with the horizontal. What is the magnitude of the force exerted on the projectile when it is at the highest position in its trajectory? Neglect any effects of air resistance.
Answer» A 2.00-kg projectile is fired upward at an $∠ 20^{\circ}$ with the horizontal. What is the magnitude of the force exerted on the projectile when it is at the highest position in its trajectory? Neglect any effects of air resistance.

Discussion

8160.	A fan rotates at 100rpm .find its angular velocity and linear velocity ,if tip of its blades is 0.20m away from the axis of rotation
Answer» A fan rotates at 100rpm .find its angular velocity and linear velocity ,if tip of its blades is 0.20m away from the axis of rotation

Discussion

8161.	Michael Jordan has a vertical leap of 1.25 m, what is his takeoff speed and for how much time he will be in the air?. Take a = 10 m/s2 downwards.
Answer» Michael Jordan has a vertical leap of 1.25 m, what is his takeoff speed and for how much time he will be in the air?. Take a = 10 m/s² downwards.

Discussion

8162.	If the mass of an object be 10 kg, what is its weight ? (g=9.8m/s2).
Answer» If the mass of an object be 10 kg, what is its weight ? $(g = 9.8 m / s^{2})$ .

Discussion

8163.	The ball hits a wall horizontally at 6 m s_1 . it rebounds horizontally at 4.4 m s_1. The ball is in contact with the Wall for 0.04 s . what is acceleration of the ball
Answer» The ball hits a wall horizontally at 6 m s^_1. it rebounds horizontally at 4.4 m s^_1. The ball is in contact with the Wall for 0.04 s . what is acceleration of the ball

Discussion

8164.	Derive kinetic energy?
Answer» Derive kinetic energy?

Discussion

8165.	A bicycle initially moving with a velocity 8m/s accelerates for 6s at a rate of 4m/s^2 . What will be its final velocity
Answer» A bicycle initially moving with a velocity 8m/s accelerates for 6s at a rate of 4m/s^2 . What will be its final velocity

Discussion

8166.	An athlete moves along on a circular track with a constant speed. This is an example of:
Answer» An athlete moves along on a circular track with a constant speed. This is an example of:

Discussion

8167.	For a body in linear motion, which of the following velocity time graphs not possible?
Answer» For a body in linear motion, which of the following velocity time graphs not possible?

Discussion

8168.	Why are the walls and roof of an auditorium are covered with sound absorbent materials?
Answer» Why are the walls and roof of an auditorium are covered with sound absorbent materials?

Discussion

8169.	Which state of matter has most amount of vibration
Answer» Which state of matter has most amount of vibration

Discussion

8170.	A block of wood is just floating on water, what will happen to the block if the temperature of the water is increased?
Answer» A block of wood is just floating on water, what will happen to the block if the temperature of the water is increased?

Discussion

8171.	Rahul had a far point of vision less than infinity. What kind of disease he is suffering from?
Answer» Rahul had a far point of vision less than infinity. What kind of disease he is suffering from?

Discussion

8172.	Acceleration due to gravity g=9.8ms2. Which of the following is/are correct?
Answer» Acceleration due to gravity $g = 9.8 \frac{m}{s^{2}}$ . Which of the following is/are correct?

8172.

Acceleration due to gravity g=9.8ms2. Which of the following is/are correct?

Answer»

Acceleration due to gravity $g = 9.8 \frac{m}{s^{2}}$ . Which of the following is/are correct?

Discussion

8173.	Which of the following is not a fundamental/basic unit of measurement?
Answer» Which of the following is not a fundamental/basic unit of measurement?

Discussion

8174.	'The year 2016 will have February of 29 days'. Is this statement true ?
Answer» 'The year 2016 will have February of 29 days'. Is this statement true ?

Discussion

8175.	State the three laws of motion.
Answer» State the three laws of motion.

Discussion

8176.	Why copper, aluminium are used over tungsten, iron, nickel to make fuses.
Answer» Why copper, aluminium are used over tungsten, iron, nickel to make fuses.

Discussion

8177.	The Earth moves round the Sun in an elliptical orbit as shown in figure. The ratio OAOB=x, the ratio of the speed of the earth at B and at A is nearly
Answer» The Earth moves round the Sun in an elliptical orbit as shown in figure. The ratio $\frac{O A}{O B} = x$ , the ratio of the speed of the earth at B and at A is nearly

Discussion

8178.	There are 35 students in a hostel. Due to the admission of 7 new, the expenses of the mass were increased by ₹42 per day, while the average expenditure per head diminished by ₹1. What was the original expenditure of the mass?
Answer» There are 35 students in a hostel. Due to the admission of 7 new, the expenses of the mass were increased by ₹42 per day, while the average expenditure per head diminished by ₹1. What was the original expenditure of the mass?

Discussion

8179.	Explain g value in gravitation.
Answer» Explain g value in gravitation.

Discussion

8180.	Venera 7, the first spacecraft to land on the planet Venus had a mass of 1180 kg. What would be the acceleration due to gravity of Venus if the spacecraft weighed around 10,467 N on it?8.8
Answer» Venera 7, the first spacecraft to land on the planet Venus had a mass of 1180 kg. What would be the acceleration due to gravity of Venus if the spacecraft weighed around 10,467 N on it? 8.8

Discussion

8181.	A person is standing 1 km away from a source of the sound. If the velocity of sound in the medium is 340 m/s, then calculate the number of oscillations (approximately) that the sound wave makes before it reaches that person. The frequency of the sound is 500 Hz.
Answer» A person is standing 1 km away from a source of the sound. If the velocity of sound in the medium is 340 m/s, then calculate the number of oscillations (approximately) that the sound wave makes before it reaches that person. The frequency of the sound is 500 Hz.

Discussion

8182.	What is the speed of a 150 m long train crossing a bridge of length 250 m in 25 seconds?
Answer» What is the speed of a 150 m long train crossing a bridge of length 250 m in 25 seconds?

Discussion

8183.	What does the area under the distance-time graph represent?
Answer» What does the area under the distance-time graph represent?

Discussion

8184.	A force of 30 N acts on a body and moves it through a distance of 5m in the direction of force. Calculate the work done by the force.
Answer» A force of 30 N acts on a body and moves it through a distance of 5m in the direction of force. Calculate the work done by the force.

Discussion

8185.	Which of the following weather forecast is better depicted if there is a gradual fall in the mercury level?
Answer» Which of the following weather forecast is better depicted if there is a gradual fall in the mercury level?

Discussion

8186.	What is the final velocity (v) and initial velocity (u) during each of these following situations: ( Please don't consider the gravitational force or the air) 1) A ball thrown vertically upwards at velocity of 6 m/s. 2) A ball thrown downwards at a velocity of 7 m/s. 3) A ball going vertically accelerating 4m/s. 4) A balloon which is in the air and releases a stone which takes a velocity 8 m/s to reach the ground ( find the u and v of the stone)
Answer» What is the final velocity (v) and initial velocity (u) during each of these following situations: ( Please don't consider the gravitational force or the air) 1) A ball thrown vertically upwards at velocity of 6 m/s. 2) A ball thrown downwards at a velocity of 7 m/s. 3) A ball going vertically accelerating 4m/s. 4) A balloon which is in the air and releases a stone which takes a velocity 8 m/s to reach the ground ( find the u and v of the stone)

Discussion

8187.	A nucleus with Z = 92 emits the following in a sequence: α, β−, β−, α, α, α, α, α, β−, β−, α, β+, β+, α, The Z of the resultant nucleus is
Answer» A nucleus with Z = 92 emits the following in a sequence: $α, β^{-}, β^{-}, α, α, α, α, α, β^{-}, β^{-}, α, β^{+}, β^{+}, α,$ The Z of the resultant nucleus is

Discussion

8188.	Name the unit in which loudness of sound is measured.
Answer» Name the unit in which loudness of sound is measured.

Discussion

8189.	Why do snow shoes stop you from sinking into snow?
Answer» Why do snow shoes stop you from sinking into snow?

Discussion

8190.	A thief is running on a train with the speed of 12 km/h. A police car is moving with speed of 80 km/h. If the speed of the train is 60 km/ h, what's the speed of the thief with respect to car. (Assuming that all are moving in same direction )
Answer» A thief is running on a train with the speed of 12 km/h. A police car is moving with speed of 80 km/h. If the speed of the train is 60 km/ h, what's the speed of the thief with respect to car. (Assuming that all are moving in same direction )

Discussion

8191.	Which one of the following cells is bean-shaped?
Answer» Which one of the following cells is bean-shaped?

Discussion

8192.	A body projected upwards with an initial velocity of 49ms. What will be its final velocity after 3 seconds? [acceleration due to gravity g=9.8ms2]
Answer» A body projected upwards with an initial velocity of $49 \frac{m}{s}$ . What will be its final velocity after 3 seconds? [acceleration due to gravity $g = 9.8 \frac{m}{s^{2}}$ ]

Discussion

8193.	______________ describes how fast something is going, whereas, __________ describes how fast something is going in a certain direction.
Answer» ______________ describes how fast something is going, whereas, __________ describes how fast something is going in a certain direction.

8193.

____ describes how fast something is going, whereas, describes how fast something is going in a certain direction.

Answer»

______________ describes how fast something is going, whereas, __________ describes how

fast something is going in a certain direction.

Discussion

8194.	A Porsche can go from 0 km/hr to 100 km/hr in 10 sec. what is its average acceleration.
Answer» A Porsche can go from 0 km/hr to 100 km/hr in 10 sec. what is its average acceleration.

Discussion

8195.	An image formed by a concave mirror is 5 times greater than the object. If the radius of curvature is 40 cm, determine the distance of the object from the mirror?
Answer» An image formed by a concave mirror is $5$ times greater than the object. If the radius of curvature is $40 c m$ , determine the distance of the object from the mirror?

Discussion

8196.	From the dimensional consideration, which of the following equation is correct
Answer» From the dimensional consideration, which of the following equation is correct

Discussion

8197.	1 J is the energy required to do ____ of work.
Answer» 1 J is the energy required to do ____ of work.

Discussion

8198.	A small ball carries a charge equal to 'e' coulomb, where 'e' is the charge on an electron. 20 such balls are put in a cylindrical box and sealed. The total charge in the box will be___ C.
Answer» A small ball carries a charge equal to 'e' coulomb, where 'e' is the charge on an electron. $20$ such balls are put in a cylindrical box and sealed. The total charge in the box will be___ C.

Discussion

8199.	State the type of motion represented by following sketches in Fig. 2.34 (a) and (b). Give example of each type of motion.
Answer» State the type of motion represented by following sketches in Fig. 2.34 (a) and (b). Give example of each type of motion.

8199.

State the type of motion represented by following sketches in Fig. 2.34 (a) and (b). Give example of each type of motion.

Answer»

State the type of motion represented by following sketches in Fig. 2.34 (a) and (b).

Give example of each type of motion.

Discussion

8200.	On a 120 km long track, a train travels the first 30 km with a uniform speed of 30 km/h. How fast must the train travel for the rest part of the journey so as to average 60 km/h for the entire trip?
Answer» On a 120 km long track, a train travels the first 30 km with a uniform speed of 30 km/h. How fast must the train travel for the rest part of the journey so as to average 60 km/h for the entire trip?

Discussion

Explore topic-wise InterviewSolutions in .

When a cricket ball is thrown vertically upwards, it reaches a maximum height of 5 metres. (a) What was the initial speed of the ball ? (b)) How much time is taken by the ball to reach the highest point ? (g=10ms−2)

An ant first travels from P to R on a right angled triangle PQR which is 13m long. Then it walks to point Q travelling 12m. Find the displacement and distance travelled by the ant.

How much watt are there in one horse power

How to prove , frequency= 1/ 2 . Please explain

An energy pyramid depicts the amount of energy contained in each trophic level, as one progresses from first tropic level to fourth trophic level in this pyramid, what happens to the amount of stored energy?

An object of size 2.0cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals to the radius of curvature. What will be the size of the image?

What is upthrust ?

A 2.00-kg projectile is fired upward at an ∠20∘ with the horizontal. What is the magnitude of the force exerted on the projectile when it is at the highest position in its trajectory? Neglect any effects of air resistance.

A fan rotates at 100rpm .find its angular velocity and linear velocity ,if tip of its blades is 0.20m away from the axis of rotation

Michael Jordan has a vertical leap of 1.25 m, what is his takeoff speed and for how much time he will be in the air?. Take a = 10 m/s2 downwards.

If the mass of an object be 10 kg, what is its weight ? (g=9.8m/s2).

The ball hits a wall horizontally at 6 m s_1 . it rebounds horizontally at 4.4 m s_1. The ball is in contact with the Wall for 0.04 s . what is acceleration of the ball

Derive kinetic energy?

A bicycle initially moving with a velocity 8m/s accelerates for 6s at a rate of 4m/s^2 . What will be its final velocity

An athlete moves along on a circular track with a constant speed. This is an example of:

For a body in linear motion, which of the following velocity time graphs not possible?

Why are the walls and roof of an auditorium are covered with sound absorbent materials?

Which state of matter has most amount of vibration

A block of wood is just floating on water, what will happen to the block if the temperature of the water is increased?

Rahul had a far point of vision less than infinity. What kind of disease he is suffering from?

Acceleration due to gravity g=9.8ms2. Which of the following is/are correct?

Which of the following is not a fundamental/basic unit of measurement?

'The year 2016 will have February of 29 days'. Is this statement true ?

State the three laws of motion.

Why copper, aluminium are used over tungsten, iron, nickel to make fuses.

The Earth moves round the Sun in an elliptical orbit as shown in figure. The ratio OAOB=x, the ratio of the speed of the earth at B and at A is nearly

There are 35 students in a hostel. Due to the admission of 7 new, the expenses of the mass were increased by ₹42 per day, while the average expenditure per head diminished by ₹1. What was the original expenditure of the mass?

Explain g value in gravitation.

Venera 7, the first spacecraft to land on the planet Venus had a mass of 1180 kg. What would be the acceleration due to gravity of Venus if the spacecraft weighed around 10,467 N on it?8.8

A person is standing 1 km away from a source of the sound. If the velocity of sound in the medium is 340 m/s, then calculate the number of oscillations (approximately) that the sound wave makes before it reaches that person. The frequency of the sound is 500 Hz.

What is the speed of a 150 m long train crossing a bridge of length 250 m in 25 seconds?

What does the area under the distance-time graph represent?

A force of 30 N acts on a body and moves it through a distance of 5m in the direction of force. Calculate the work done by the force.

Which of the following weather forecast is better depicted if there is a gradual fall in the mercury level?

A nucleus with Z = 92 emits the following in a sequence: α, β−, β−, α, α, α, α, α, β−, β−, α, β+, β+, α, The Z of the resultant nucleus is

Name the unit in which loudness of sound is measured.

Why do snow shoes stop you from sinking into snow?

A thief is running on a train with the speed of 12 km/h. A police car is moving with speed of 80 km/h. If the speed of the train is 60 km/ h, what's the speed of the thief with respect to car. (Assuming that all are moving in same direction )

Which one of the following cells is bean-shaped?

A body projected upwards with an initial velocity of 49ms. What will be its final velocity after 3 seconds? [acceleration due to gravity g=9.8ms2]

______________ describes how fast something is going, whereas, __________ describes how fast something is going in a certain direction.

A Porsche can go from 0 km/hr to 100 km/hr in 10 sec. what is its average acceleration.

An image formed by a concave mirror is 5 times greater than the object. If the radius of curvature is 40 cm, determine the distance of the object from the mirror?

From the dimensional consideration, which of the following equation is correct

1 J is the energy required to do ____ of work.

A small ball carries a charge equal to 'e' coulomb, where 'e' is the charge on an electron. 20 such balls are put in a cylindrical box and sealed. The total charge in the box will be___ C.

State the type of motion represented by following sketches in Fig. 2.34 (a) and (b). Give example of each type of motion.

On a 120 km long track, a train travels the first 30 km with a uniform speed of 30 km/h. How fast must the train travel for the rest part of the journey so as to average 60 km/h for the entire trip?

____ describes how fast something is going, whereas, describes how fast something is going in a certain direction.