# CTET Science Quiz 2 – Physics Questions for CTET

## CTET Science Quiz 2 – Physics Questions for CTET

### CTET Science Questions – Physics Quiz 2

Q1. Meniscus of mercury in a capillary is:

1. concave
2. convex
3. plane
4. cylindrical     Ans.B

Q2. With the rise of temperature, the surface tension of a liquid:

1. increases
2. decreases
3. remains unchanged
4. none of these     Ans.B

Q3. An oil drop is placed on the surface of water. It will:

1. remain on the surface as a sphere
2. remain on the surface as a distorted drop
3. spread as a thin layer
4. none of these     Ans.C

Q4. The surface tension phenomenon is the result of the tendency of a system of:

1. conserve Energy
2. keep P.E. Minimum
3. conserve Volume
4. Keep surface area minimum     Ans.D

Q5. Water drops do not stick to the oily surface due to

2. surface tension
3. cannot mix each other
4. water is lighter than oil     Ans.A

Q6. Newton’s first law is also called as

1. law of moments
2. law of inertia
3. law of energy
4. law of momentum     Ans.B

Q7. If we want to calculate the pressure of a liquid at the bottom of vessel, the quantity which is not required to determine it, is

1. height of the liquid column
2. surface area of the bottom of the vessel
3. density of the liquid
4. acceleration due to gravity at the bottom of the vessel      Ans.B

Q8. A man inside an artificial satellite, feels weightlessness because the force of attraction due to earth is

1. zero at that place
2. is balanced by the force of attraction due to moon
3. equal to centripetal force
4. non-effective due to particular design of the satellite       Ans.A

Q9. Fat can be separated from milk in a cream separator because of:

1. cohesive force
2. gravitational force
3. centripetal force
4. centrifugal force     Ans.D

Q10. A liquid drop tends to assume a spherical shape because of:

1. surface tension
2. viscous force
3. gravitational force
4. elastic force     Ans.A

Q11. Decibel is the unit of –

1. speed of light
2. intensity of sound
3. intensity of heat
4. None of these     Ans.B

Q12. Two bulbs are fitted in a room in the domestic electric installation. One of them glows brighter than the other. Then –

1. the brighter bulb has smaller resistance
2. the brighter bulb has larger resistance
3. both the bulbs have the same resistance
4. none of these     Ans.A

Q13. A car parked in the sun with its windows closed gets terribly hot inside. This is due  to –

1. the heat emitted by the engine
2. the greenhouse effect
3. the good conducting power of the metal body
4. the double layered wind shield     Ans.B

Q14. Which instrument is used to measure sound under water ?

1.  Hygrometer
2.  Hygroscope
3.  Hypsometer
4.  Hydrophone     Ans.D

Q15. Which instrument is used to measure pressure of gases ?

1.  Manometer
2.  Machmeter
3.  Magnetometer
4.  Micrometer     Ans.A

Q16. The working principle of a washing machine is –

1. Centrifugation
2. Dialysis
3. Reverse Osmosis
4. Diffusion     Ans.A

Q17. “Soap helps in the cleaning of cloths because ” –

1. It reduces surface tension
2. It increases surface tension
3. It absorbs the dirt
4. Of some other reason     Ans.A

Q18. “Which waves are used in sonography? “

1. Microwaves
2. Sound waves
3. Infrared waves
4. Ultrasonic waves     Ans.D

Q19. In summer, the mirages are seen due to the phenomenon of –

1. reflection of light
2. total internal reflection
3. interference of light
4. diffraction of light     Ans.B

Q20. In which part of the eye lies the pigment, that decides the colour of the eyes of a person?

1. cornea
2. choroid
3. lris
4. vitreous body     Ans.A

Q21. What determines the emf between the two metals placed in an electrolyte?

1. relative position of metals in the electrochemical series
2. distance between them
3. strength of electrolyte
4. nature of electrolyte     Ans.C

Q22. Voltmeter cannot be used to measure-

1. charge
2. current
3. electrochemical equivalent
4. potential difference     Ans.A

Q23. The potential difference across a conductor is doubled, the rate of generation of heat will-

1. be halved
2. become four times
3. be doubled
4. become one third     Ans.B

Q24. Electric potential is-

1. scalar and dimensionless quantity
2. vector and dimensionless quantity
3. scalar and dimensional quantity
4. vector and dimensional quantity     Ans.C

Q25. A charge is moved electric repulsion in an electric field. Which of the following is correct?

1. The potential energy of the charge decreases
2. Work is done by the electric field
3. The strength of electric field decreases
4. None of the above     Ans.D

Q26. Electric lines of force about a positive point charge are-

1. circular and clockwise
3. circular and anticlockwise

Q27. What are the essential requirements for the heater filament?

1. low resistivity, low melting point
2. low resistivity, high melting point
3. high resistivity, high melting point
4. high resistivity, low melting point     Ans.C

Q28. In which of the following substance, the resistance decreases with an increase of temperature?

1. germanium
2. silver
3. copper
4. constantan     Ans.A

Q29. LED and CFL are very commonly used as sources of light in homes. Which of the following statement is true?

1. CFL is better because LED contains toxic materials
2. LED is better because CFL contains toxic materials
3. Both are equally good
4. Neither of them is good because both contain toxic materials     Ans.B

Q30. A freely suspended bar magnet always comes rest in a particular direction?

1. north-south
2. south-north
3. west-north
4. south-west     Ans.A

Q31. The laws of reflection of light are valid for-

1. plane mirrors only
2. concave mirrors only
3. concave mirrors only
4. all reflecting surfaces     Ans.D

Q32. The image formed by a convex lens may be-

1. virtual and diminished
2. virtual and magnified
3. virtual and of the same size
4. none of these     Ans.B

Q33. The image formed by a concave mirror-

1. is always real
2. is always virtual
3. can be both real and virtual
4. none of these     Ans.C

Q34. The image formed by a convex mirror is always-

1. real and magnified
2. real and diminished
3. virtual and diminished
4. virtual and magnified     Ans.C

Q35. The mirror which has a wide field of view must be-

1. concave
2. convex
3. plane
4. none of these     Ans.B

Q36. An object is placed at a distance of 30 cm from a concave mirror a focal length 15 cm. The image will be-

1. real and of same size
2. real and magnified
3. real and diminished
4. virtual and magnified     Ans.A

Q37. The power of lens is -1.5 Its focal length is-

1. -1.5 cm
2. -5 D
3. 66.6 cm
4. -66.6 cm     Ans.D

Q38. The power of a lens is measured in-

1. cm
2. cm square
3. diopter
4. m     Ans.C

Q39. If an object is moved towards a convex lens, the size of its image-

1. decreases
2. increases
3. First increase then decrease
4. none of these     Ans.B

Q40. A real, inverted and enlarged image is formed by a convex lens when the object is placed-

1. at F
2. at 2F
3. beyond 2F
4. between F and 2F     Ans.D

Q41. “Consider the following statements with reference to X-rays

1. They produce heat when absorbed by matter.
2. They are generated when fast moving electron strike a metal target.
3. They can penetrate through a thin sheet of aluminium.
4. Which of the following statements given above are correct?.”
1. I, II and III
2. I and II
3. I and III
4. II and III     Ans.A

Q42. “Select the correct answer “

1. two satellites moving the same circular orbit have the same angular momentum
2. two satellites moving the same circular orbit have the same mass
3. two satellites moving the same circular orbit have the same energy
4. two satellites moving the same circular orbit have the same force     Ans.A

Q43. “Soap helps in the cleaning of clothes because “

1. It reduces surface tension
2. It increases surface tension
3. It absorbs the dirt
4. Of some other reason     Ans.A

Q44. “Which waves are used in sonography?. “

1. Microwaves
2. Sound waves
3. Infrared waves
4. Ultrasonic waves     Ans.D

Q45. What will happen if the star having mass greater than five times of the Sun is dead?.

1. White dwarf will form
2. Neutron star will form
3. Black hole will form
4. Nebula will form     Ans.C

Q46. Modern movie songs released are the best in quality of sounThe rich quality of sound is due to which one of the following?.

1. A note of high frequency
2. A note of high amplitude
3. Consists many harmonics
4. Consists the fundamental frequency     Ans.C

Q47. “Which one of the following statements is correct?.A slab of ice kept in a room,”

2. does not radiate heat but absorbs heat from the surrounding
3. radiate heat but absorbs more heat from the surrounding
4. radiate heat more than that absorbed by it from the surrounding     Ans.B

Q48. “When the matter is cooled to very low temperature, it will form “

1. semi-conductor
2. super-conductor
3. insulator
4. capacitor     Ans.B

Q49. “Which of the following cannot be emitted by radioactive substances during their decay? “

1. Electrons
2. Protons
3. Neutrons
4. Helium     Ans.B

Q50. Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wires id slightly increased and both the wires are made to vibrate simultaneously?.

1. Noise
2. Beats
3. Resonance
4. Non-linear effects     Ans.C

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CTET Physics Quiz 1

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