Correct option is C
Dentists use Concave mirror to view enlarged images of teeth. These mirrors curve inwards and have the ability to create magnified, upright virtual images when an object is placed within a certain distance (focal point).
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Question
Dentists use which of these types of mirrors to view enlarged images of teeth?
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- 1)
Arrange the following electromagnetic radiations with correct decreasing order of their associated frequencies from the code given below:
(i) Infra-red radiation
(ii) Microwave radiation
(iii) Ultra-violet radiation
- 2)A galvanometer can be converted into a voltmeter by connecting it with which of these?
- 3)Which of the following laws support the fact that it is difficult to fix a nail on a freely suspended wooden frame?
- 4)With reference to conductors, consider the following statements:
1. The valance Band and the conduction band overlap each other.
2. The resistivity of a conductor decreases exponentially with temperature.
3. Conductors conducts the electric current less than semiconductors and greater than insulators.
How many of the above three statements given above are correct? - 5)When are the two vibrating particles said to be in same phase?
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Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R))
Assertion (A): When a pendulum is taken to Moon, its time period will decrease.
Reason (R): At the Moon, the value of gravitational constant 'g' will increase that in turn decreases the time period of the pendulum. - 8)Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): At highest position in a vertical circular motion, tension in the string is minimum.
Reason (R) : At the highest point, the tension = centrifugal force - weight of body. This is the minimum value for tension throughout the motion. - 9)The direction of the magnetic field around a current-carrying wire can be determined by using:
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Similar Questions
- 1)
Arrange the following electromagnetic radiations with correct decreasing order of their associated frequencies from the code given below:
(i) Infra-red radiation
(ii) Microwave radiation
(iii) Ultra-violet radiation
- 2)A galvanometer can be converted into a voltmeter by connecting it with which of these?
- 3)Which of the following laws support the fact that it is difficult to fix a nail on a freely suspended wooden frame?
- 4)With reference to conductors, consider the following statements:
1. The valance Band and the conduction band overlap each other.
2. The resistivity of a conductor decreases exponentially with temperature.
3. Conductors conducts the electric current less than semiconductors and greater than insulators.
How many of the above three statements given above are correct? - 5)When are the two vibrating particles said to be in same phase?
- 6)Stars twinkle because:
- 7)
Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R))
Assertion (A): When a pendulum is taken to Moon, its time period will decrease.
Reason (R): At the Moon, the value of gravitational constant 'g' will increase that in turn decreases the time period of the pendulum. - 8)Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): At highest position in a vertical circular motion, tension in the string is minimum.
Reason (R) : At the highest point, the tension = centrifugal force - weight of body. This is the minimum value for tension throughout the motion. - 9)The direction of the magnetic field around a current-carrying wire can be determined by using:
- 10)If we shine green light on a tree, the tree will
