Q27
2 marksShort AnswerSection E

List four precautions which a student should observe while determining the focal length of a given convex lens by obtaining image of a distant object on a screen.

Figure for question 27
Chemical Reactions and Equations
Chemical Reactions and Equations
Official Answer

The resistance of the resistor is not given in the figure. The figure only shows a voltmeter and an ammeter connected to a circuit with a resistor, but it does not provide any information about the resistance of the resistor.

resistanceresistorvoltmeterammeter

Marking Scheme

  • 1None

Hint

None

Quick Oral Answer

The resistance of the resistor is not given in the figure. The figure only shows a voltmeter and an ammeter connected to a circuit with a resistor, but it does not provide any information about the resistance of the resistor.

Analysis & Explanation

The figure shows a voltmeter and an ammeter connected to a circuit with a resistor, but it does not provide any information about the resistance of the resistor. Therefore, we cannot determine the resistance of the resistor from the given figure.

Common Mistakes

  1. 1assuming the resistance is given in the figure

Interesting Facts

None

Spotted a mistake or something unclear?

Tell us — we fix reported answers fast.

Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2019?

This question carries 2 marks in the CBSE Class 10 Science 2019 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Chemical Reactions and Equations" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2019 paper?

This is a Short Answer question from Section E in the CBSE Class 10 Science 2019 paper.