AIEEE and IIT model question paper
try to solve this model papper you might get AIEEE or IIT
IIT Mains model problem type question pepper
Physics
1)A convex lens of focal length 40cm is in contact with a concave lens of focal length 25cm the power of the combination is?
2)A rod of diamagnetic material is suspended freely in a uniform magnetic field. Which of the following statements is correct?
3) The number of waves in a 4 cm thick strip of glass is the same as in 5 cm water when the same monochromatic light travels in them. If the refractive index of water be 4/3, what is that of glass?
4) A boat at anchor is rocked by waves whose velocity is crests are 100cm apart and whose velocity is 25cms, These waves reach the boat after every?
5) One face of prism of refracting angle 30˚ and refractive index 1.414 is slivered. At what angle must a ray of light fall on the unsoldered face so that after refraction into the prism and reflection at the silvered surface it retraces its path?
6)The terminal velocity of a sphere of radius in a viscous liquid is v. The terminal velocity of a sphere of radius 2r of the same density will be?
7) A thin convex lens has focal length f and its aperture has diameter d. It forms an image of intensity 1. Now the central part of the aperture up to diameter d/2 is blocked by an opaque paper. The focal length and image intensity will change to?
8) The temperature at which the speed of sound in air becomes double of its value at 27˚C is?
9)The diameter of the objective of a telescope is 0.1m and the wavelength of light is 6000 A. resolving limit will be nearly?
10)The photoelectric work function of a metal is 1 Ev light of wavelength 300 A falls on it.
Photoelectrons come out of the metal with velocity?
11)If a simple pendulum is made to oscillate in water, then time period will?
12)If a square is moving with the speed of light, then to the man it will appear as?
13)Two lenses with focal lengths 20 cm and 30 cm will form an achromatic combination if they are separated by?
14)A tuning fork A is in resonance with an air column 32 cm long and closed at one end. When the length of air column is increased by 1 cm, it is in resonance with another tuning fork B.A and B together give 80 beats in 10 second. The frequency of tuning fork B is?
15)A magnifying glass is to be used at the fixed object distance of 1 inch. If it is to produce an erect image magnified 5 times, its focal length should be?
16)A man runs towards a mirror at a rate of 6ms^-1 .We assume the mirror to be at rest, his image will have a velocity?
17)The audible frequency of human ear is?
18)The range of a projectile, which is launched at an angle of 15˚ with the horizontal, is 1.5km what is the range of the projectile if it is projected at an angle of 45˚ to the horizontal?
Job oriented
1)6.5 D
2)You have not given the options
the rod will rotate arrange itself such that its north is towards the magnetic field's south
3)
4)0.25 seconds
11)time period will decrease due to viscosity
12)It depends on the orientation of the square . If it is moving perpendicular to its plane there will not be any difference , but if it is moving tangential to its plane it will get reduced to a line , due to length contraction .
17)IT is in the range of 20 Hz to 20000 Hz when the man is born .However as he grows older , the range confines to samller values