1.
A body of mass of 2 kg absorbed 10j of radioactive radiations then absorbed dose of radiation in rad is
2.
A disc, a hoop and a sphere of same mass and radius are rolled down from a frictionless inclined plane. Which has greater speed on reaching the ground:
3.
A light and a heavy body have equal momentum, which one has greater kinetic energy:
4.
A logic gate has four inputs, its possible input combination will be:
5.
A long solenoid has 20 turns/cm, the current necessary to produce a magnetic field of 20 milli-tesla inside the solenoid is approximately :
6.
A maintenance crew is working on a section of a three-lane highway only lane open to traffic. The result is much slower traffic flow. Do cars on a highway behave like:
A.
The molecules of an incompressible fluid
B.
The molecules of a compressed fluid
C.
D.
7.
A two Kg body and a 3 Kg body have equal momentum. If the Kinetic Energy of 3 kg body is 10 J The K.E. of 2 Kg body is:
8.
According to Einstein bodies and Light rays follow:
9.
An A.C emf of V=200 sin (100πt) volt is concerned to a choke of negligible resistance. In order to produce current of amplitude 1 A, the inductance of choke should be:
10.
An A.C of rms value of 4 A and a D.C current 1 flowing through identical resistors dissipate heat at the same rate then value of 1 will be:
11.
An airplane is flying in a straight line at a constant altitude. If a wind gust strikes and raises the nose of the airplane, the nose will bob up and down until the plane eventually return's to it's original position altitude. Are these oscillation's are:
12.
An artificial satellite is orbiting the earth, What can be guess about this artificial Satellite:
A.
Centripetal Acceleration is Zero
B.
Tangential Acceleration is Zero
C.
Angular Acceleration is Zero
D.
Angular and Tangential Acceleration is Zero
13.
An electron describes a circular orbits of radius 2 cm in a uniform magnetic field. If speed of electron is doubled then radius of the orbit will:
14.
An electron is moving along the axis of a solenoid carrying a current which of the following is a correct statement about the electromagnetic force acting on the electron?
A.
The force acts perpendicular to its motion
B.
The force acts anti-parallel to its motion
C.
The force acts in the direction of motion
D.
15.
As a projectile thrown upward moves in its parabolic path. At what point along its path are the velocity and acceleration vectors for the projectile perpendicular to each other?
16.
As temperature of the black body is raised the black body radiations become richer in :
17.
At very high frequency of A.C through RLC series circuit, the circuit behaves like:
18.
At which of the following places, motion of simple pendulum becomes slowest:
19.
For a radioactive element, the percentage of decade nuclei after 3 half lives is:
20.
How much more thumb pressure must a nurse use to administer an injection with a hypodermic needle of inside diameter 0.30 mm compared to one with inside diameter 0.60 mm? Assume that the two needles have the same length and that the volume flow rate is the same in both cases.
21.
If the length of a second's pendulum is L, then the length of pendulum having a period 1 sec will be
22.
If speed of the coil in A.C generator is doubled the r.m.s value of current become:
23.
In RLC series circuit at resonance the voltage across R, L and C are 10 V, 30 V and 30 V respectively then applied voltage will be :
24.
Let an emf of 120 volt of negligible internal resistance connected across a resistance of 1000 ohm. Then the current flowing through the circuit will be:
25.
The % uncertainty for value of V and I is 2 % and 6% respectively. Hence %age uncertainty in the value of R=V/I is: