12th Grade Physics Practice Questions! Quiz

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| By Meyya22

Meyya22

Community Contributor

Quizzes Created: 6 | Total Attempts: 139,933

Questions: 10 | Attempts: 5,095 | Updated: Mar 20, 2023

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Questions and Answers

1.

Electric field is a --------------field, since force is a------------ quantity
- A.
  
  Vector,Vector
- B.
  
  Scalar,Vector
- C.
  
  Vector,Scaler
- D.
  
  Scalar,Scalar
Correct Answer
A. Vector,Vector

Explanation
"The term field in physics generally refers to a quantity that is
defined at every point in space and may vary from point to point."

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2.

__________= 1V/A
- A.
  
  1℮
- B.
  
  1Ω
- C.
  
  1ρ
- D.
  
  1σ
Correct Answer
B. 1Ω

Explanation
unit of resistance.

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3.

The modern ac generator with a typical output capacity of ------ is a highly evolved machine.
- A.
  
  0-50 MW
- B.
  
  50-90 MW
- C.
  
  90-110MW
- D.
  
  30-70 MW
Correct Answer
C. 90-110MW

Explanation
The modern ac generator with a typical output capacity of 100 MW is a highly evolved machine.

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4.

The difference is often called the ________ of the circuit
- A.
  
  Bindwidth
- B.
  
  Brandwidth
- C.
  
  Bandwidth
- D.
  
  Boundwidth
Correct Answer
C. Bandwidth

Explanation
related to Sharpness of resonance

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5.

For paraxial rays tanø=ø, now tan(n-1)ø=? Consider ø is small
- A.
  
  Nø-ø
- B.
  
  ø
- C.
  
  2ø
- D.
  
  Nø
Correct Answer
A. Nø-ø

Explanation
since, tanø=ø then tan(n-1)ø=nø-ø

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6.

Ammeter is used to measure ----------.
- A.
  
  A
- B.
  
  µA
- C.
  
  MA
- D.
  
  All the above
Correct Answer
D. All the above

Explanation
All denotes various unit of current

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7.

Frequency band of Satellite Communication is ---------------------
- A.
  
  540-1600 kHz
- B.
  
  3.7-4.2 GHz
- C.
  
  88-108 MHz
- D.
  
  420-890 MHz
Correct Answer
B. 3.7-4.2 GHz

Explanation
Frequency band of Satellite Communication

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8.

LtR= Voltage applied to a__________
- A.
  
  Series RLC
- B.
  
  Parallel LC
- C.
  
  Parallel LCR
- D.
  
  Series CR
Correct Answer
A. Series RLC

Explanation
According to AC voltage drived from kirchhoff's loop rule.

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9.

= This relation is known as______
- A.
  
  Mirror equation
- B.
  
  Thin lens formula
- C.
  
  First focal point formula
- D.
  
  Second focal point formula
Correct Answer
B. Thin lens formula

Explanation
By applying sign convention in refraction by a lens

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10.
- A.
  
  Reactance diagram
- B.
  
  Impedance diagram
- C.
  
  Capacitance diagram
- D.
  
  Phasor diagram
Correct Answer
B. Impedance diagram

Explanation
denotes impedance.

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