MCQs Physics 10th Class Past Papers Lahore Board 2023, Group 2

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10th class Physics Lahore board- Objective 2023 Group 2 Download Clear Copy

10th Class Past Papers Lahore Board, Physics Objective 2023-1

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Physics MCQs with Answers 2023 Group 2 Lahore Board

Which of the following is not processing?
- (a). Arranging
- (b). Manipulating
- (c). Calculating
- (d). Gathering
  - Correct Answer: (D)
A device which convert mechanical energy into electrical energy is called:
- (a). AC generator
- (b). DC motor
- (c). Transformer
- (d) Electroscope
  - Correct Answer: (A)
Speed of light in water is
- (a). 2.3×10⁸ms^-1
- (b). 3.0×10⁸ms^-1
- (c). 2.5×10⁸ms^-1
- (d). 2.0×10₈ms^-1
  - Correct Answer: (A)
The process by which electrons are emitted by a hot metal surface is known as:
- (a). Boiling
- (b). Evaporation
- (c). Conduction
- (d). Thermionic emission
  - Correct Answer: (D)
Which part of D.C motor reverses the direction of current through the coil every half cycle
- (a). Aramature
- (b). Commutator
- (c). Brushes
- (d). Slip rings
  - Correct Answer: (D)
The loudness of a sound is most closely related to its:
- (a). Frequency
- (b). Period
- (c). Wavelength
- (d). Amplitude
  - Correct Answer: (D)
Image formed by camera is:
- (a). Real, inverted and diminished
- (b). Virtual, upright and diminished
- (c). Virtual, upright and magnified
- (d). Real, inverted and magnified
  - Correct Anwer: (A)
Capacitance is defined as:
- (a). VC
- (b). Q/C
- (c). QV
- (d). V/Q
  - Correct Answer: (C)
The number of neutrons in a Uranium ²³⁸₉₂ U isotope are:
- (a). 92
- (b). 146
- (c). 238
- (d). 330
  - Correct Answer: (B)
When did Graham Bell make a simple telephone:
- (a). 1876
- (b). 1886
- (c). 1870
- (d). 1867
  - Correct Answer: (A)
What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added
- (a). Increases
- (b). Decreases
- (c). Remains the same
- (d). Connot be
  - Correct Answer: (B)
When a heavy nucleus splits into two lighter nuclei, the process would be:
- (a). Release nuclear energy
- (b). Absorb nuclear energy
- (c). Release chemical energy
- (d). Absorb chemical energy
  - Correct Answer: (A)