KCET Medical | 2014
Q. A metallic wire of 1 m length has a mass of 10×102 kg. If a tension of 100 N is applied to a wire, what is the speed of transverse wave?
1. 31.6 ms1
2. 10 ms1
3. 0.1 ms1
4. 200 ms1
KCET Engineering
View Solution
Q. Which of the following is not a vector quantity?
1. Nuclear spin
2. Weight
3. Momentum
4. Potential energy
KCET Engineering
View Solution
Q. A train is approaching towards a platform with a speed of 10 ms1 while blowing a whistle of frequency 340Hz. What is the frequency of whistle heard by a stationary observer on the platform?
Given speed of sound = 340 ms1.
1. 330Hz
2. 340Hz
3. 360Hz
4. 350Hz
KCET Engineering
View Solution
Q. A body starts from rest and moves with constant acceleration for t sec. It travels a distance x1 in first half of time and x2 in next half of time, then
1. x2=x1
2. x2=3x1
3. x2=2x1
4. x2=4x1
KCET Engineering
View Solution
Q. What is a period of revolution of earth satellite? Ignore the height of satellite above the surface of earth.
Given : (1) The value of gravitational acceleration g=10ms2.
(2) Radius of earth RE=6400 km. Take π=3.14.
1. 85 minutes
2. 83.73 minutes
3. 90 minutes
4. 156 minutes
KCET Engineering
View Solution
Q. A car moves from A to B with a speed of 30kmph and from B to A with a speed of 20kmph. What is the average speed of the car?
1. 25kmph
2. 50kmph
3. 10kmph
4. 24kmph
KCET Engineering
View Solution
Q. What is the source temperature of the Carnot engine required to get 70% efficiency?
Given sink temperature = 27oC
1. 1000oC
2. 90oC
3. 727oC
4. 270oC
KCET Engineering
View Solution
Q. A cycle tyre bursts suddenly. What is the type of this process?
1. Isothermal
3. Isochoric
4. Isobaric
KCET Engineering
View Solution
Q. An object is placed at 20 cm in front of a concave mirror produces three times magnified real image. What is focal length of the concave mirror?
1. 15 cm
2. 6.6 cm
3. 10 cm
4. 7.5 cm
KCET Engineering
View Solution
Q. An aeroplane executes a horizontal loop at a speed of 720 kmph with its wings banked at 45o. What is the radius of the loop?
Take g = 10 ms2.
1. 4 km
2. 4.5 km
3. 7.2 km
4. 2 km
KCET Engineering
View Solution
Q. The maximum kinetic energy of the photoelectrons depends only on
1. Potential
2. Frequency
3. Incident angle
4. Pressure
KCET Engineering
View Solution
Q. A person is driving a vehicle at uniform speed of 5ms1 on a level curved track of radius 5 m. The coefficient of static friction between tyres and road is 0.1. Will the person slip while taking the turn with the same speed ? Take g = 10ms2.
Choose the correct statement.
1. A person will slip if v2>5ms1
2. A person will slip if v2<5ms1
3. A person will slip if v2=5ms1
4. A person will slip if v2>10ms1
KCET Engineering
View Solution
Q. A fringe width of a certain interference pattern is β=0.002 cm. What is the distance of 5th dark fringe from centre?
1. 1×102cm
2. 11×102cm
3. 1.1×102cm
4. 3.28×106cm
KCET Engineering
View Solution
Q. A force F=5^i+2^j5^k acts on a particle whose position vector is r=^i2^j+^k. What is the torque about the origin?
1. 8^i+10^j+12^k
2. 8^i+10^j12^k
3. 8^i10^j8^k
4. 10^i10^j^k
KCET Engineering
View Solution
Q. A period of geostationary satellite is
1. 12 h
2. 30 h
3. 48 h
4. 24 h
KCET Engineering
View Solution
Q. A rotating wheel changes angular speed from 1800 rpm to 3000 rpm in 20 s. What is the angular acceleration assuming to be uniform?
KCET Engineering
View Solution
Q. What is the energy of the electron revolving in third orbit expressed in eV?
1. 1.51 eV
2. 3.4 eV
3. 4.53 eV
4. 4 eV
KCET Engineering
View Solution
Q. Which of the following spectral series of hydrogen atom is lying in visible range of electromagnetic wave?
1. Pfund series
2. Paschen series
3. Balmer series
4. Lyman series
KCET Engineering
View Solution
Q. A flow of liquid is streamline if the Reynold number is
1. Less than 1000
2. Greater than 1000
3. Between 2000 to 3000
4. Between 4000 to 5000
KCET Engineering
View Solution
Q. A polarized light of intensity Io is passed through another polarizer whose pass axis makes an angle of 60o with the pass axis of the former. What is the intensity of emergent polarized light from second polarizer?
1. I=Io
2. I=Io/6
3. I=Io/5
4. I=Io/4
KCET Engineering
View Solution
Q. A microscope is having objective of focal length 1 cm and eyepiece of focal length 6 cm. If tube length is 30 cm and image is formed at the least distance of distinct vision, what is the magnification produced by the microscope? Take D=25 cm.
1. 6
2. 150
3. 25
4. 125
KCET Engineering
View Solution
Q. A 10 kg metal block is attached to a spring of spring constant 1000Nm1. A block is displaced from equilibrium position by 10 cm and released. The maximum acceleration of the block is
1. 10ms2
2. 100ms2
3. 200ms2
4. 0.1ms2
KCET Engineering
View Solution
Q. A pipe of 30 cm long and open at both the ends produces harmonics. Which harmonic mode of pipe resonates a 1.1 kHz source?
Given speed of sound in air = 330 ms1.
1. Fifth harmonic
2. Fourth harmonic
3. Third harmonic
4. Second harmonic
KCET Engineering
View Solution
Q. A focal length of a lens is 10 cm. What is power of a lens in dioptre?
1. 0.1 D
2. 10 D
3. 15 D
4. 20 D
KCET Engineering
View Solution
Q. In anomalous expansion of water, at what temperature, the density of water is maximum?
1. 4oC
2. <4oC
3. >4oC
4. 10oC
KCET Engineering
View Solution
Q. A body having a moment of inertia about its axis of rotation equal to 3 kgm2 is rotating with angular velocity of 3rads1. Kinetic energy of this rotating body is same as that of a body of mass 27kg moving with velocity v. The value of v is
1. 1 s1
2. 2 s1
3. 0.5 s1
4. 1.5 s1
KCET Engineering
View Solution
Q. A physical quantity Q is found to depend on observables x, y and z, obeying relation Q=x2/5z3y. The percentage error in the measurements of x, y and z are 1%, 2% and 4% respectively. What is percentage error in the quantity Q will be :
1. 5%
2. 4.5%
3. 7.75%
4. 11%
KCET Engineering
View Solution
Q. What is the de Broglie wavelength of the electron accelerated through a potential difference of 100 Volt?
1. 12.27 ˚A
2. 1.227 ˚A
3. 0.1227 ˚A
4. 0.001227 ˚A
KCET Engineering
View Solution
Q. A stone is thrown vertically at a speed of 30ms1 making an angle of 45o with the horizontal. What is the maximum height reached by the stone ? Take g=10ms2.
1. 22.5 m
2. 30 m
3. 15 m
4. 10 m
KCET Engineering
View Solution
Q. Diameter of the objective of a telescope is 200 cm. What is the resolving power of a telescope? Take wavelength of light = 5000 ˚A.
1. 3.28×105
2. 1×106
3. 6.56×106
4. 3.28×106
KCET Engineering
View Solution