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Assertion : Mountain roads rarely go s...

Assertion : Mountain roads rarely go straight up the slope. Reason : Slope of mountains are large therefore more chances of vehicle to slip from roads.

A

Statement-I is true, Statement-II is true, Statement-II is correct explanation for Statement-I

B

Statement-I is true, Statement-II is true, Statement-II is NOT a correct explanation for Statement-I

C

Statement-I is true, Statement-II is false

D

Statement-I is false, Statement-II is true.

Text Solution

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The correct Answer is:
A
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Why are mountain roads generally made winding upwards rather than going straight up ?

You saw a tragic road accident resulting in death of two persons. The reason for that is bike rider tried to overtake the truck from wrong-side with overspeed. He was not wearing a helmet that caused head injury. You were scared because you also have same habit to drive activa without wearing helmet. Your father often warned you that to drive vehicle without a driving licence is a crime. Which part of brain is involved into learning how to drive vehicle ?

You saw a tragic road accident resulting in death of two persons. The reason for that is bike rider tried to overtake the truck from wrong-side with overspeed. He was not wearing a helmet that caused head injury. You were scared because you also have same habit to drive activa without wearing helmet. Your father often warned you that to drive vehicle without a driving licence is a crime. Injury to which part of brain leads to instant death of an individual ? Why ?

You saw a tragic road accident resulting in death of two persons. The reason for that is bike rider tried to overtake the truck from wrong-side with overspeed. He was not wearing a helmet that caused head injury. You were scared because you also have same habit to drive activa without wearing helmet. Your father often warned you that to drive vehicle without a driving licence is a crime. Which gland became more active when you saw the accident ? Which hormone was poured in blood ? What changes did you feel in body?

Assertion: The driver in a vechicle moving with a constant speed on a straight road is in a non-inertial frame of referance. Reason: A reference frame in which Newton's laws of motion are applicable is non-inertial.

A passenger arriving in a new town wishes to go from the station to a hotel located 10 km away on a straight road from the station . A dishonest cabman takes him along a circuitous path 23 km long and reaches the hotel in 28 min . What is (a) the average speed of the taxt , (b) the magnitude of average velocity ? Are the two equal ?

At the foot of a mountain, the angle of its summit is 45^(@) . After ascending 1000m towards the mountain up a slope of 30^(@) inclination, the angle of elevation is found to be 60^(@) . Find the height of the mountain (sqrt3= 1.732)

A woman starts from her home at 9.00 am, walks with a speed of 5 km h ^(-1) on a straight road up to her office 2.5 km away, stays at the office up to 5.00 pm, and returns home by an auto with a speed of 25 kmh^(-1). Choose suitable scales and plot the x-t graph of her motion.

A woman starts from her home at 9.00 am, walks with a speed of 5 km h^(-1) on a straight road up to her office 2.5 km away, stays at the office up to 5.00 pm, and returns home by an auto with a speed of 25 km h^(-1) . Choose suitable scales and plot the x-t graph of her motion.

ALLEN -KINEMATICS-Assertion-Reason
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  2. Statement-I : Path of a projectile is a parabola irrespective of its v...

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  3. Statement-I : When velocity of a particle is zero then acceleration of...

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  4. Statement-I : A particle moves in a straight line with constant accele...

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  5. Statement-I : If two particles, moving with constant velocities are to...

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  6. STATEMENT-1: Two balls are dropped one after the other form a tall tow...

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  7. STATEMENT-1: A man can cross river of width d in minimum time t. On in...

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  8. STATEMENT-1: When a body is dropped and another body is thrown horizon...

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  9. STATEMENT-1: The maixmum range along the inclined plane, when thrown d...

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  10. Assertion: Two particles of different mass, projected with same veloci...

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  11. Assertion: The speed of a body can be negative. Reason: If the body ...

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  12. Assertion: A positive acceleration can be associated with a slowing do...

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  13. Assertion: In a free fall, the initially velocity of a boyd may or may...

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  14. Assertion: Graph(s) represent one dimensional motion of a particle. Wh...

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  15. Assertion: When the body is dropped or thrown horizontally form the sa...

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  16. Statement-I : When the direction of motion of a particle moving in a c...

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  17. Statement-I : A cyclist must adopt a zig-zag path while ascending a st...

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  18. Assertion : Mountain roads rarely go straight up the slope. Reason ...

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  19. STATEMENT-1: When a particle is thrown obliquely form the surfcae of t...

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  20. STATEMENT -1 : For an observer looking out through the window of a fa...

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