MCQ
The graph drawn with object distance along abscissa & image as ordinate for a convex lens is
  • A
    straight
  • B
    circle
  • C
    rectangular hyperbola
  • D
    parabola

Answer

(c) rectangular hyperbola 
Explanation: 
Image

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The pressure exerted by an electromagnetic wave of intensity I$\Big(\frac{\text{watt}}{\text{m}^2}\Big)$ on a non-reflecting surface is : [c is the velocity of light].
According to Planck’s quantum theory any electromagnetic radiation is:

The minimum energy required to excite a hydrogen atom from its ground state is

(a) 13.6 eV

(b) -13.6 eV

(c) 3.4 eV  

(d) 10.2 eV

A potentiometer has uniform potential gradient across it.  Two cells connected in series (i) to support each other and (ii) to oppose each other are balanced over 6m and 2m respectively on the potentiometer wire.  The e.m.f.’s of the cells are in the ratio of

(a) 1 : 2

(b) 1 : 1

(c) 3 : 1

(d) 2 : 1

The figure shows a graph between ln  and ln|n|, where   is the area enclosed by the nth orbit in a hydrogen like atom. The correct curve is

(a) 4

(b) 3

(c) 2

(d) 1

When an object possess electric charge then the object is said to be:
Identify the correct options:
  1. An ammeter should have small resistance.
  2. An ammeter should have large resistance.
  3. A voltmeter should have small resistance.
  4. A voltmeter should have large resistance.

The graph Shows the variation in magnetic flux (t) with time through a coil. Which of the statements given below is not correct

(a) There is a change in the direction as well as magnitude of the induced emf between B and D

(b) The magnitude of the induced emf is maximum between B and C

(c)There is a change in the direction as well as magnitude of induced emf between A and C

(d) The induced emf is zero at B

Two magnets A and B are identical in mass, length and breadth but have different magnetic moments. In a vibration magnetometer, if the time period of B is twice the time period of A. The ratio of the magnetic moments   of the magnets will be

(a) 1/2

(b) 2

(c) 4  

(d) 1/4

Assertion : The electrical conductivity of earth’s atmosphere decrease with altitude.

Reason     : The high energy particles (i.e. g-rays and cosmic rays) coming from outer space and entering our earth’s atmosphere causes ionisation of the atoms of the gases present there and the pressure of gases decreases with increase in altitude.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If assertion is false but reason is true.