debasisanswer.blogspot.in

Question and Answer: Physics (part-3)

Friday, 5 February 2016

Physics (part-3)

debasisanswer.blogspot.com

Q: What would be the carrier and one of the side brands were suppressed in an AM wave modulated to a depth of 75%?

O: (a) 89.1%

(b) 9.1%

(c) 7.81%

(d) 100%

Ans. (a) 89.1%

Q: When a body moves with constant speed in a circular path, then

O: (a) work done will be zero.

(b) acceleration will be zero.

(c) no force acts on the body.

(d) its velocity remains constant.

Ans. (a) work done will be zero.

Q: The angle of banking is independent of

O: (a) speed of vehicle.

(b) radius of curvature of road.

(c) height of inclination.

(d) none of the above.

Ans. (d) none of the above.

Q: What determines the nature of the path followed by the particle?

O: (a) speed

(b) velocity

(c) acceleration

(d) both b and c

Ans. (d) both b and c

Q: A body is tried to one end of the string and whirled in a vertical circle, the physical quantity which remains constant is

O: (a) momentum

(b) speed

(c) kinetic energy

(d) total energy

Ans. (d) total energy

Q: A particle moves in a circle of radius 5cm with constant speed and time period 0.2π s. The acceleration of the particle is

O: (a) 25 m/s^2

(b) 36 m/s^2

(c) 5 m/s^2

(d) 15 m/ s^2

Ans. (c) 5 m/s^2

Q: A stone tied to one end of rope and rotated in a circular motion. If the string suddenly breaks, then the stone travels

O: (a) in perpendicular direction

(b) in direction of centrifugal force

(c) towards centripetal force

(d) in tangential direction

Ans. (d) in tangential direction

Q: If longitudinal strain for a wire is 0.03 and its Poisson’s ratio is 0.5, then its lateral strain is

O: (a) 0.003

(b) 0.0075

(c) 0.015

(d) 0.4

Ans. (c) 0.015

Q: When a wire is subjected to a force along its length, its length increases by 0.4% and its radius decreases by 0.2%. Then the Poisson’s ratio of the material of the wire is

O: (a) 0.8

(b) 0.5

(c) 0.2

(d) 0.3

Ans. (b) 0.5

Q: When a rod is heated but prevented from expanding, the stress developed is independent of

O: (a) length of rod

(b) rise in temperature

(c) material of the rod

(d) none of these

Ans. (a) length of rod

No comments:

debasisanswer.blogspot.in

Question and Answer

Friday, 5 February 2016

Physics (part-3)

debasisanswer.blogspot.com

Q: What would be the carrier and one of the side brands were suppressed in an AM wave modulated to a depth of 75%?

O: (a) 89.1%

(b) 9.1%

(c) 7.81%

(d) 100%

Ans. (a) 89.1%

Q: When a body moves with constant speed in a circular path, then

O: (a) work done will be zero.

(b) acceleration will be zero.

(c) no force acts on the body.

(d) its velocity remains constant.

Ans. (a) work done will be zero.

Q: The angle of banking is independent of

O: (a) speed of vehicle.

(b) radius of curvature of road.

(c) height of inclination.

(d) none of the above.

Ans. (d) none of the above.

Q: What determines the nature of the path followed by the particle?

O: (a) speed

(b) velocity

(c) acceleration

(d) both b and c

Ans. (d) both b and c

Q: A body is tried to one end of the string and whirled in a vertical circle, the physical quantity which remains constant is

O: (a) momentum

(b) speed

(c) kinetic energy

(d) total energy

Ans. (d) total energy

Q: A particle moves in a circle of radius 5cm with constant speed and time period 0.2π s. The acceleration of the particle is

O: (a) 25 m/s^2

(b) 36 m/s^2

(c) 5 m/s^2

(d) 15 m/ s^2

Ans. (c) 5 m/s^2

Q: A stone tied to one end of rope and rotated in a circular motion. If the string suddenly breaks, then the stone travels

O: (a) in perpendicular direction

(b) in direction of centrifugal force

(c) towards centripetal force

(d) in tangential direction

Ans. (d) in tangential direction

Q: If longitudinal strain for a wire is 0.03 and its Poisson’s ratio is 0.5, then its lateral strain is

O: (a) 0.003

(b) 0.0075

(c) 0.015

(d) 0.4

Ans. (c) 0.015

Q: When a wire is subjected to a force along its length, its length increases by 0.4% and its radius decreases by 0.2%. Then the Poisson’s ratio of the material of the wire is

O: (a) 0.8

(b) 0.5

(c) 0.2

(d) 0.3

Ans. (b) 0.5

Q: When a rod is heated but prevented from expanding, the stress developed is independent of

O: (a) length of rod

(b) rise in temperature

(c) material of the rod

(d) none of these

Ans. (a) length of rod

No comments: