Light from the Sun reaches us in nearly (1) 2 minutes (2) 4 minutes (3) 8 minutes (4) 16 minutes

Light from the Sun reaches us in nearly (1) 2 minutes (2) 4 minutes (3) 8 minutes (4) 16 minutes
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(3) 8 minutes Explanation: The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System (not the Milky Way, which is our galaxy) varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto
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Light from the Sun reaches us in nearly (1) 2 minutes (2) 4 minutes (3) 8 minutes (4) 16 minutes

Description : Light from the Sun reaches us in nearly (1) 2 minutes (2) 4 minutes (3) 8 minutes (4) 16 minutes

Last Answer : (3) 8 minutes Explanation: The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System ... Way, which is our galaxy) varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.

Light from the Sun reaches us in nearly (1) 8 min (2) 2 min (3) 6 min (4) 4 min

Description : Light from the Sun reaches us in nearly (1) 8 min (2) 2 min (3) 6 min (4) 4 min

Last Answer : (1) 8 min Explanation: The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.

Light from the Sun reaches us in nearly (1) 8 min (2) 2 min (3) 6 min (4) 4 min

Description : Light from the Sun reaches us in nearly (1) 8 min (2) 2 min (3) 6 min (4) 4 min

Last Answer : 8 min

The light from the Sun reaches the Earth in about— (1) 8 seconds (2) 8 minutes (3) 10 seconds (4) 10 minutes

Description : The light from the Sun reaches the Earth in about— (1) 8 seconds (2) 8 minutes (3) 10 seconds (4) 10 minutes

Last Answer : (2) 8 minutes Explanation: Light travels at 186,000 miles a second at the Earth is 93 million miles to Sun on average. This works out as 8.33 minutes for light from the Sun to reach Earth. ... is filtered through the Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon.

The light from the Sun reaches the Earth in about— (1) 8 seconds (2) 8 minutes (3) 10 seconds (4) 10 minutes

Description : The light from the Sun reaches the Earth in about— (1) 8 seconds (2) 8 minutes (3) 10 seconds (4) 10 minutes

Last Answer : 8 minutes

True statements about visual adaptation include: a. light adaptation takes longer than dark adaptation b. dark adaptation reaches its maximum in about 20 minutes c. in dark adapted eye, a higher intensity of light is required to stimulate cones than rodsd. people who wear red goggles in the light adapt quicker in the dark than those who do not wear them

Description : True statements about visual adaptation include: a. light adaptation takes longer than dark adaptation b. dark adaptation reaches its maximum in about 20 minutes c. in dark adapted eye, a higher intensity ... wear red goggles in the light adapt quicker in the dark than those who do not wear them

Last Answer : in dark adapted eye, a higher intensity of light is required to stimulate cones than rods

The starting current of an electric motor is ________ the current flowing after the motor reaches its normal running speed. (a) nearly equal to (b) exactly equal to (c) less than (d) much greater than

Description : The starting current of an electric motor is ________ the current flowing after the motor reaches its normal running speed. (a) nearly equal to (b) exactly equal to (c) less than (d) much greater than

Last Answer : Ans:(d)

Heat from the sun reaches earth by the process of – (1) Conduction (2) Convection (3) Radiation (4) All of the above

Description : Heat from the sun reaches earth by the process of – (1) Conduction (2) Convection (3) Radiation (4) All of the above

Last Answer : (3) Radiation Explanation: In physics, radiation is a process in which energetic particles or energetic waves travel through vacuum, or through mattercontaining media that are not required for their propagation.

Heat from the Sun reaches the Earth by (1) Reflection (2) Conduction (3) Radiation (4) Convection

Description : Heat from the Sun reaches the Earth by (1) Reflection (2) Conduction (3) Radiation (4) Convection

Last Answer : (3) Radiation Explanation: The radiation (light, heat, etc.) travels through the intervening 150,000,000 kilometers in 8 minutes. Radiation is a process in which energetic particles or energetic waves ... waves or sound waves, are usually not considered to be forms of "radiation" in this sense.

Heat from the sun reaches the Earth by: w) conduction x) convection y) radiation z) none of the above

Description : Heat from the sun reaches the Earth by: w) conduction x) convection y) radiation z) none of the above

Last Answer : ANSWER: Y -- RADIATION

Heat from the sun reaches earth by the process of (1) Conduction (2) Convection (3) Radiation (4) All of the above

Description : Heat from the sun reaches earth by the process of (1) Conduction (2) Convection (3) Radiation (4) All of the above

Last Answer : Radiation

Heat from the Sun reaches the Earth by (1) Reflection (2) Conduction (3) Radiation (4) Convection

Description : Heat from the Sun reaches the Earth by (1) Reflection (2) Conduction (3) Radiation (4) Convection

Last Answer : Radiation

Which of the following is not caused by atmospheric refraction of light? (1) Sun appearing red at sunset (2) Twinkling of stars at night (3) Sun appearing higher in the sky than it actually is (4) Sun becoming visible two or three minutes before actual sunrise

Description : Which of the following is not caused by atmospheric refraction of light? (1) Sun appearing red at sunset (2) Twinkling of stars at night (3) Sun appearing higher in the sky than it actually is (4) Sun becoming visible two or three minutes before actual sunrise

Last Answer : (3) Sun appearing higher in the sky than it actually is Explanation: The twinkling of stars and variation in size of the Sun are due to atmospheric refraction of light. Besides, refraction is also ... higher or lower in the sky due to the changing position of the Earth relative to the Sun.

Which of the following is not caused by atmospheric refraction of light ? (1) Sun appearing red at sunset (2) Twinkling of stars at night (3) Sun appearing higher in the sky than it actually is (4) Sun becoming visible two or three minutes before actual sunrise

Description : Which of the following is not caused by atmospheric refraction of light ? (1) Sun appearing red at sunset (2) Twinkling of stars at night (3) Sun appearing higher in the sky than it actually is (4) Sun becoming visible two or three minutes before actual sunrise

Last Answer : Sun appearing higher in the sky than it actually is

The surface temperature of the Sun is nearly - (1) 2000K (2) 4000K (3) 6000K (4) 8000K

Description : The surface temperature of the Sun is nearly - (1) 2000K (2) 4000K (3) 6000K (4) 8000K

Last Answer : (3) 6000K

Light from the nearest star (other than the sun) reaches the earth in (a) 4.2 seconds (b) 42 seconds (c) 4.2 years (d) 42 years

Description : Light from the nearest star (other than the sun) reaches the earth in (a) 4.2 seconds (b) 42 seconds (c) 4.2 years (d) 42 years

Last Answer : Ans:(c)

Light reaches earth from sun in?

Description : Light reaches earth from sun in?

Last Answer : 8 minutes 20semnds (500 seconds)

The light of sun reaches to the surface of earth in

Description : The light of sun reaches to the surface of earth in

Last Answer : 8 minutes 16.6 sec

If a train runs at 40 km/hour, it reaches its destination late by 11 minutes. But if it runs at 50 km/hour, it is late by 5 minutes only. The correct time (in minutes) for the train to complete the journey is? a) 13 b) 15 c) 19 d) 21 e) None of these

Description : If a train runs at 40 km/hour, it reaches its destination late by 11 minutes. But if it runs at 50 km/hour, it is late by 5 minutes only. The correct time (in minutes) for the train to complete the journey is? a) 13 b) 15 c) 19 d) 21 e) None of these

Last Answer : If the distance be x km, then x/40-x/50=6/60 x/4-x/5=1 x=20 km. Required time = (20/40) hour – 11 minutes = (1/2×60-11) minutes = 19 minutes Answer: c)

White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : (2) reflect all the light that reaches them Explanation: The coolness and warmth associated with clothes is because of their reflective or absorptive capacities. White clothes are good reflectors of light, thereby keeping the body cool. The opposite is the case with black clothes.

White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Description : White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely

Last Answer : reflect all the light that reaches them

Suns heat reaches us by – (1) Conduction (2) Convection (3) Radiation (4) Reflection

Description : Suns heat reaches us by – (1) Conduction (2) Convection (3) Radiation (4) Reflection

Last Answer : (3) Radiation Explanation: Radiation is a process in which energetic particles or energetic waves travel through vacuum, or through matter-containing media that are not required for their propagation. The sun' ... frequencies), but those from the sun are mainly infra-red, visible, and ultra-violet.

Sun’s heat reaches us by (1) Conduction (2) Convection (3) Radiation (4) Reflection

Description : Sun’s heat reaches us by (1) Conduction (2) Convection (3) Radiation (4) Reflection

Last Answer : Radiation

Assertion (A) :Sunlight reaches us without dispersion in the form of white light and not as a component. Reason(R) : Dispersion takes place due to variation of refractive index for different wavelength but in vaccum the speed of light is independent of wavelength and hence vaccum is a non- dispersive medium (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true.

Description : Assertion (A) :Sunlight reaches us without dispersion in the form of white light and not as a component. Reason(R) : Dispersion takes place due to variation of refractive index for different wavelength but in vaccum the speed of ... of A. (c) A is true but R is false. (d) A is false but R is true.

Last Answer : (a) Both A and R are true and R is the correct explanation of A.

What is the source of the electromagnetic energy that reaches earth from the sun?

Description : What is the source of the electromagnetic energy that reaches earth from the sun?

Last Answer : the solar panals

What The amount of the sun energy that reaches the earth?

Description : What The amount of the sun energy that reaches the earth?

Last Answer : Need answer

When does the sun reaches its maximum angular distance from the equator?

Description : When does the sun reaches its maximum angular distance from the equator?

Last Answer : At the solstice

When our sun reaches the end of its red giant phase, it will turn into a------? A. Supernova B. White Dwarf (Answer) C. Black Hole D. Neutron Star

Description : When our sun reaches the end of its red giant phase, it will turn into a------? A. Supernova B. White Dwarf (Answer) C. Black Hole D. Neutron Star

Last Answer : B. White Dwarf (Answer)

What happen to the heat energy that reaches Earth from the sun?

Description : What happen to the heat energy that reaches Earth from the sun? 

Last Answer : Ans: The layer of air which surrounds the Earth acts as an insulating layer. Carbon dioxide gas in the atmosphere absorbs the heat from the Sun and keeps it in thereby maintaining a specific temperature for life on Earth.

f the temperature falls below 18 degrees, the heating is switched on. When the temperature reaches 21 degrees, the heating is switched off. What is the minimum set of test input values to cover all valid equivalence partitions? A. 15, 19 and 25 degrees B. 17, 18, 20 and 21 degrees C. 18, 20 and 22 degrees D. 16 and 26 degrees

Description : f the temperature falls below 18 degrees, the heating is switched on. When the temperature reaches 21 degrees, the heating is switched off. What is the minimum set of test input values to cover all valid equivalence ... 17, 18, 20 and 21 degrees C. 18, 20 and 22 degrees D. 16 and 26 degrees

Last Answer : A. 15, 19 and 25 degrees

A thermometer measures temperature in whole degrees only. If the temperature falls below 18 degrees, the heating is switched off. It is switched on again when the temperature reaches 21 degrees. What are the best values in degrees to cover all equivalence partitions? A. 15,19 and 25. B. 17,18 and19. C. 18, 20 and22. D. 16, 26 and 32.

Description : A thermometer measures temperature in whole degrees only. If the temperature falls below 18 degrees, the heating is switched off. It is switched on again when the temperature reaches 21 degrees. What are the best values in degrees to ... and 25. B. 17,18 and19. C. 18, 20 and22. D. 16, 26 and 32.

Last Answer : A. 15,19 and 25.

The distance from the Earth to the Sun is about 100 million miles. The speed of light is 186,000 miles per second, and light takes eight minutes to reach the Earth from the Sun. Let's say the Sun rose at 6am this morning, and that by some freak of physics the speed of light is suddenly doubled to 372,000 miles a second.What time will the Sun rise tomorrow? -Riddles

Description : The distance from the Earth to the Sun is about 100 million miles. The speed of light is 186,000 miles per second, and light takes eight minutes to reach the Earth from the Sun. Let's say the ... of light is suddenly doubled to 372,000 miles a second.What time will the Sun rise tomorrow? -Riddles

Last Answer : 6am again. After all, what diffrence does the speed of light make to the answer? It's irrelevant- only the speed of the roation of the Earth matters here.

How many minutes does it take for light to come from sun to earth ?

Description : How many minutes does it take for light to come from sun to earth ?

Last Answer : : It takes time for light to come from the sun to the earth-- 8 minutes 20 seconds

Why is the distace between earth and the sun measured in light minutes and the distance between neptune and the sun measured in light hours?

Description : Why is the distace between earth and the sun measured in light minutes and the distance between neptune and the sun measured in light hours?

Last Answer : Because it only takes 8 minutes for sunlight to reach Earth, butit takes 4 hours to reach Neptune.

To within a half minute, how many minutes does it take for light to travel from the sun to the Earth?

Description : To within a half minute, how many minutes does it take for light to travel from the sun to the Earth? 

Last Answer : ANSWER: 9-1/2 MINUTES (accept: 9 to 10 minutes)

Is a redshift of 1 equal to a light travel distance of nearly 8 billion years?

Description : Is a redshift of 1 equal to a light travel distance of nearly 8 billion years?

Last Answer : Yes, a redshift of 1 does equal to a light travel distance ofnearly 8 billion years (i.e. 7.7 billion years).

Which of the following statements is true when we see ‘rainbow’ ? (1) We face sun and raindrops (2) The Sun remains behind us and we face raindrops (3) In light rainfall, we face Sun (4) The sky remains clear and the sun is at lower position in the sky

Description : Which of the following statements is true when we see ‘rainbow’ ? (1) We face sun and raindrops (2) The Sun remains behind us and we face raindrops (3) In light rainfall, we face Sun (4) The sky remains clear and the sun is at lower position in the sky

Last Answer : The Sun remains behind us and we face raindrops

Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun. -Riddles

Description : Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun. -Riddles

Last Answer : A shadow

Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun.What am I? -Riddles

Description : Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun.What am I? -Riddles

Last Answer : I am your shadow.

Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun. What am I? -Riddles

Description : Each morning I appear To lie at your feet, All day I will follow No matter how fast you run, Yet I nearly perish In the midday sun. What am I? -Riddles

Last Answer : Your shadow.

A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes. (A) 4 (B) 8 (C) 12 (D) 16

Description : A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes. (A) 4 (B) 8 (C) 12 (D) 16

Last Answer : (D) 16

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? A.8 B.11 C.13 D.16 E.None of theseSix bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? A.8 B.11 C.13 D.16 E.None of these

Description : Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? A.8 B.11 C.13 D.16 E.None of these

Last Answer : Answer – D (16) Explanation – L.C.M. of 2, 4, 6, 8, 10, 12 is 120.So, the bells will toll together after every 120 seconds, i.e, 2 minutes.In 30 minutes, they will toll together 30/2 + 1 = 16

Two stones of different masses are dropped simultaneously from the top of a building – (1) Smaller stone reaches the ground earlier (2) Larger stone reaches the ground earlier (3) Both the stones reach the ground at the same time (4) Depends on the composition of the stone

Description : Two stones of different masses are dropped simultaneously from the top of a building – (1) Smaller stone reaches the ground earlier (2) Larger stone reaches the ground earlier (3) Both the stones reach the ground at the same time (4) Depends on the composition of the stone

Last Answer : (3) Both the stones reach the ground at the same time Explanation: Both stones at the same Lime. The initial speed is 0 for both stones, and the only acceleration working in that system would be g ... way across the air. The shape of the falling object will decide the force needed to open that way.

A particle is thrown vertically upward. When it reaches the highest point, it has – (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Description : A particle is thrown vertically upward. When it reaches the highest point, it has – (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Last Answer : (1) a downward acceleration Explanation: When a particle is thrown vertically upwards in space, it will experience constant acceleration towards the ground (irrespective of the direction in which it ... point, it has zero velocity but has downward acceleration equal to acceleration due to gravity.

If a car starting from rest reaches a velocity of 18 m s-1 after 6.0 s then its acceleration is A. 1 m s-2 B. 2 m s-2 C. 3 m s-2 D. 4 m s-2

Description : If a car starting from rest reaches a velocity of 18 m s-1 after 6.0 s then its acceleration is A. 1 m s-2 B. 2 m s-2 C. 3 m s-2 D. 4 m s-2

Last Answer : 3 m s-2

The velocity of a ball tossed vertically into the air is expressed by the equation v(t) = -32t + 4, where t is given in seconds. Give the velocity of the ball when it reaches its highest point.

Description : The velocity of a ball tossed vertically into the air is expressed by the equation v(t) = -32t + 4, where t is given in seconds. Give the velocity of the ball when it reaches its highest point. 

Last Answer : ANSWER: 0

A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Description : A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Last Answer : ANSWER: 100 JOULES (accept 98 joules)

A particle is thrown vertically upward. When it reaches the highest point, it has (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Description : A particle is thrown vertically upward. When it reaches the highest point, it has (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Last Answer : a downward acceleration

Two stones of different masses are dropped simultaneously from the top of a building (1) Smaller stone reaches the ground earlier (2) Larger stone reaches the ground earlier (3) Both the stones reach the ground at the same time (4) Depends on the composition of the stone

Description : Two stones of different masses are dropped simultaneously from the top of a building (1) Smaller stone reaches the ground earlier (2) Larger stone reaches the ground earlier (3) Both the stones reach the ground at the same time (4) Depends on the composition of the stone

Last Answer : Both the stones reach the ground at the same time

How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

Description : How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

Last Answer : ANSWER: 60,000 JOULES or 60kJ or 6X104J