Which one of the following wavelength radiations may correspond to an X-ray ?
- A.1 nm
- B.10 nm
- C.100 nm
- D.300 nm
Show answer
Answer: A
In a Telescope, compared to the eyepiece lens the objective lens has
- A.larger focal length and larger aperture
- B.larger focal length and smaller aperture
- C.smaller focal length and larger aperture
- D.smaller focal length and smaller aperture
Show answer
Answer: A
The energy, E, of a photon can be expressed as E = hf where f is the frequency and h is Planck’s constant. The dimensions of h are the same as that of
- A.linear momentum
- B.angular momentum
- C.displacement
- D.torque
Show answer
Answer: B
The work done by the force acting on an object is zero if the displacement of the object
- A.is in the opposite direction of the direction of force
- B.is in the same direction of the direction of force
- C.is in perpendicular direction of the direction of force
- D.none of above
Show answer
Answer: C
The magnetic field inside a current carrying very long solenoid is
- A.Uniform
- B.Non-uniform
- C.Zero
- D.Highest at mid-point
Show answer
Answer: A
Which one of the following instruments can be used to measure —250°C temperature ?
- A.By using a mercury based thermometer
- B.By using an alcohol based thermometer
- C.By using a clinical thermometer
- D.By using thermocouple based thermometer
Show answer
Answer: D
The quantity of heat needed to change unit mass of a substance from liquid to vapour without changing the temperature, is called
- A.specific heat
- B.specific latent heat
- C.thermal capacity
- D.heat energy
Show answer
Answer: B
The temperature at which “vapour pressure of the liquid in an open vessel becomes equal to the atmospheric pressure” is called
- A.Melting point
- B.Boiling point
- C.Liquid point
- D.None of the above
Show answer
Answer: B
Which one of the following statements about surface tension is correct ?
- A.It increases when temperature ‘Increases
- B.It decreases when temperature increases
- C.It will remain same with increase or decrease of temperature
- D.It will always decrease with increase or decrease of temperature
Show answer
Answer: B
Why a fielder in the ground gradually pulls his hands backward while catching a fast moving cricket ball ?
- A.To reduce the acceleration of the ball
- B.To increase the acceleration of the ball
- C.To increase the velocity of the ball
- D.None of above
Show answer
Answer: A
Bottom of a tank containing water appears to be raised. It is due to
- A.Reflection of light
- B.Refraction of light
- C.Interference of light
- D.Diffraction of light
Show answer
Answer: B
SONAR stands for
- A.Sonographic Natural Ranging
- B.Simple Operational Navigation Ranging
- C.Sound Navigation and Ranging
- D.Simple Operational Natural Ranging
Show answer
Answer: C
Which one of the following radiations has longer wavelength ?
- A.X-rays
- B.Ultraviolet
- C.Micro Wave
- D.Infra-red
Show answer
Answer: C
For a material under static conditions, which one among the following statements is correct ?
- A.An insulator can be charged
- B.A perfect charged can be conductor
- C.Both perfect conductor and insulator can be charged
- D.Both perfect conductor and insulator cannot be charged
Show answer
Answer: A
The energy is always conserved for a system which is
- A.isolated only
- B.non-isolated only
- C.both isolated and non-isolated
- D.none of above
Show answer
Answer: A
Suppose, a ball of mass M is thrown upwards from a point A and it reaches up to the highest point B and returns back to point A, which one among the following is correct ?
- A.Kinetic Energy at A = Potential Energy at B
- B.Kinetic Energy at A = Potential Energy at A
- C.Kinetic Energy at B = Potential Energy at B
- D.Kinetic Energy at B = Kinetic Energy at A
Show answer
Answer: A
Which one of the following statements is NOT correct ?
- A.Diamond is hard due to extended covalent bonding in it
- B.Fullerene is composed of five and six membered rings
- C.Diamond is a good conductor of electricity
- D.Graphite is used as a lubricant
Show answer
Answer: C
Match List I with List II and select the answer using the code given below the Lists:
List I (Physical Quantity)A. TemperatureB. WeightC. MassD. PressureList II (SI Unit)1. Kelvin2. Kilogram3. Pascal4. Newton
code:
- A.(a) - (1) , (b) - (2) , (c) - (4) , (d) - (3)
- B.(a) - (3) , (b) - (4) , (c) - (2) , (d) - (1)
- C.(a) - (1) , (b) - (4) , (c) - (2) , (d) - (3)
- D.(a) - (3) , (b) - (2) , (c) - (4) , (d) - (1)
Show answer
Answer: C
Condensation of water vapour into water is influenced by which of the following factor/factors? 1Volume of air
2.Humidity
3.Temperature
Select the answer using the code given below:
- A.1 only
- B.1 and 2 only
- C.2 and 3 only
- D.1, 2 and 3
Show answer
Answer: D
An object is placed between infinity and the pole (P) of a convex mirror. The position of the image is
- A.between pole (P) and the focus (F), behind the mirror
- B.between the focus (F) and infinity, behind the mirror
- C.between the pole (P) and the infinity, in front of the mirror
- D.at the focus (F), behind the mirror
Show answer
Answer: A
The work done in moving a charge of 2 coulomb (C) from point A to point B is 24 J. What is the potential difference between A and B?
- A.48 V
- B.6 V
- C.12 V
- D.0.08 V
Show answer
Answer: C
Two conducting wires of the same material and of equal lengths and equal diameters are first connected in parallel and then in series in a circuit across the same potential difference. The ratio of heat produced in parallel and series combinations is
- A.2:1
- B.4:1
- C.1:2
- D.1:4
Show answer
Answer: B
The magnetic field inside a long straight solenoid-carrying current
- A.is zero
- B.decreases as we move towards its end
- C.increases as we move towards its end
- D.is uniform inside the solenoid
Show answer
Answer: D
A car has an initial velocity of 12 m/s and is brought to rest over a distance of 45 m. The acceleration of the car is
- A.+1·6 m/s²
- B.+3·2 m/s²
- C.-1·6 m/s²
- D.-0·8 m/s²
Show answer
Answer: C
The universal constant of gravitation G has the unit
- A.N
- B.m/s
- C.Joule
- D.N·m²/kg²
Show answer
Answer: D
